Code Yellow to Red in the Western United States; Wallops Rocket explosion; Glacier Silt in the Gulf of Alaska
Dust blowing in Rocky Mountain Region. Increased NO2 over Great Lakes Region and Rocky Mountain Region
Prescribed Fires in SE, Wildfires in Pacific NW
Weekend Edition: Fires in Texas, Arkansas leading to smoke in the Southeast
Moderate AQI Across Midwest
Moderate AQI in California and Great Lakes
Moderate PM2.5 in the Southern Mississippi Valley States; Coarse Particulate over Rocky Mountain and Plain States
Moderate AQI in Texas and Mississippi Valley Region. Increased NO2 in Ohio River Valley.
Weekend Edition: Lovely weather over the US
Spots of Moderate AQI as Gonzalo hits Bermuda
Good air quality in the US; Dust in Utah and Idaho
Code Yellow to Orange PM2.5 AQI levels in California; Hurricane Gonzalo Headed to Bermuda
Increased AOD from continued dust blowing in Plains region.
Numerous Fires Dot the Nation; Dust Covers Central US
Weekend Edition: Smoke over North Dakota and Code Red in Idaho
Dust in South, Lowered Visibility in Southwest
Smoke over Oregon and Idaho and Moderate Ozone AQI in California
Weekend Edition: What a difference a week makes
Moderate AQI over Great Lakes
Moderate PM2.5 over Mid-Atlantic and Great Lakes
Moderate PM2.5 and Ozone over the Great Lakes and California
Smoke in the Central US; Dust in the West
Weekend Edition: Heavy rains aid in containing the King Fire
Elevated AOD over Central U.S.
Unhealthy AQI levels in Central California due to smoke from King fire
Fires continue in CA. USG/Unhealthy/Very Unhealthy AQI Values
King Fire and Other Active Californian Wildfires Affecting Air Quality on the West Coast
Weekend Edition: The senseless King Fire continues to grow
Fires in California; Smoke Drifts East
UN Panel: Ozone Layer on the Road to Recovery (from Earth Observatory)
Smoke in the Rocky Mountains and California
Wildfire Smoke Moving East; California's King Fire Continues to Burn
Active Wildfires Continue to Produce Moderate Smoke over Pacific Northwest
Smoke from Happy Camp and July Complex Fires Impacts Air Quality in Oregon and California
Smoke in Northwest
Fires in California continue
Happy Camp Complex Fire escalates near CA/OR border.
Weekend Edition: July Complex fire is nearly under control but #790 starts in Oregon
Moderate AQIs in East, Smoke in West
Special Feature: Hell with the Lid Taken Off
High AOD in California and Rocky Mountains due to smoke
Smoke from Happy Camp Complex Fire East of California; Code Orange PM2.5 concentrations in northern California
Fires and Smoke in Pacific Northwest. USG AQI Forecasted for MidAtlantic
Weekend Edition: Smoke streams eastward from California
Northern California wildfires affect AODs, AQIs
Smoke from fires in Canada continue to spread; Unknown aerosols in Texas
High AOD due to Wildfire Smoke in Canada and Calfornia/Oregon; Code Yellow and Orange PM2.5 AQI; Remnant smoke form Baltimore
Smoke over Northern California, Moderate AQI over Eastern Mississippi Watershed
Smoke and Dust affecting US Air Quality
Weekend Edition: Dense smoke off the California Coast and waiting for Iceland
Fires in British Colombia elevating AODs
Smoke continues over Canada; Saharan dust in Gulf of Mexico
Smoke from Northern California Wildfires Moving East
Smoke over the Northern Plains; Dust over the Southern
Wildfire Smoke Pollutes Northern and Eastern US; Dust Pollutes Gulf of Mexico
Weekend Edition: The Summer of Smoke Continues
Smoke, Sulfates, and Dust Combine to Affect AOD and AQIs
Smoke over Central U.S., Fires in West
Fires in Pacific Northwest; Moderate AQIs in East
Elevated AOD Levels in the NE and Pacific NW from Wildfire Smoke
Weekend Edition: Wrapping up DISCOVER-AQ
Plume from Canada extending down to Baltimore
Smoke over Northern Border
Smoke from Canadian and Pacific Northwest Wildfires Impacts PM2.5 AQI Levels over Canada/US; Virga Observed by ELF over Baltimore
Smoke across East and Northwest
Pacific Northwest Ablaze; Canadian Smoke over Great Lakes Region
Weekend Edition: DISCOVER-AQ Continues and the GOES-R Air Quality Proving Ground Demonstration is up
Northwest Territories wildfires persist; Carlton Complex fire in Washington leads to Unhealthy AQIs
Smoke over Northeast, Fires in West
Canadian Smoke over Canada and Eastern US; Smoke Over Baltimore and High AOD over Canada
Moderate AQIs on Coasts, Smoke over North and East
US Smoke Surface Concentration Decreases; Large Dust Cloud over the Caribbean
Weekend Edition: Smoke continues to dominate North America
Smoke affecting AOD and AQIs in Northeast United States and Canada
Fires in Nevada, Smoke over Central U.S.
Blanket of Smoke of Canadian and Northwestern Fires Covers the US
Continued Smoke through Central U.S.
Wildfire Smoke continues to be an Air Quality Issue for North America
Weekend Edition: When smoke gets in your eyes edition
Elevated AODs as a result of the smoke plume over much of Canada and US
Smoke across the North; Fires in the Northwest
Heavy Smoke over Canada and Pacific Northwest
Fire and Smoke in California and Northern Canada; Sulfates on the East Coast
Weekend Edition: Smoke from Canada continues and DISCOVER-AQ Starts
Canadian wildfires affecting air quality and air visibility in United States
Smoke in the North, Sulfate in the East
Moderate AQI across Eastern U.S., Smoke from Canada Drifting South
Canadian Wildfire Smoke from the North, Saharan Dust Blowing in from the South
Weekend Edition: US continues to import aerosols from the North and South
Predominantly good air quality for fireworks tonight!
Smoke and Saharan dust in different regions persist
Elevated AQI in Mississippi Valley, Great Lakes and California due to PM 2.5.
Saharan Dust Polluting Southern US; Heavy Smoke Produced from Canadian Wildfires
Weekend edition: Large fires in Northern Canada amidst the snow
Smoke continues over much of Northern Canada; models show dust to the West
Smoke over Canada; Dust in the Gulf of Mexico; Moderate AQI levels: the East is dominated by PM2.5 and the West by Ozone
Smoke and moderate AQI in Great Lakes region. Light fires scattered through the gulf coast and texas.
Southwesterly Winds Transport Saharan Dust into the SE, Humidity Helps Form PM2.5
Weekend Edition: Dust pours into Texas and Smoke comes south from Canada
Smoke from Great Slave Lake, Saharan dust, and elevated sulfates affecting air quality
Southern California AQIs reach Unhealthy for Sensitive Groups
Haze over the Mid-Atlantic and Remnant Smoke over Canada
Increased AOD in Mid-Atlantic region.
Dust, Sulfates, and Nitrates Ensue Moderate AQIs in Southern US
Weekend Edition: Ozone elevated in Southern California and a mystery
Great Slave Lake plume spans into Continental United States; Aerosols in Texas lead to elevated AOD
Smoke from Great Slave wildfires in the Dakotas: High Sulfates in the East
Smoke from the Great Slave Lake fires and Mexico;Code Yellow to Orange AQI in California
Fires in the Pacific northwest persist.
Heavy Smoke from Two Bulls Wildfire Leads to Unhealthy Levels of PM2.5 in Oregon
Weekend Edition: Elevated ozone in Southern California; New Fire near Bend Oregon
USG AQIs in Southwest, sulfates to the East
AQIs Unhealthy for Sensitive Groups in California as Smoke over Canada Shrinks
Canada and Mexico: Smoke North and South of the Border
blah!
FUNNY RIVER FIRE DIMINISHING; HIGH LEVELS OF OZONE IN SOUTHERN CALIFORNIA
Weekend Edition: June comes in like a lamb
REMNANT SMOKE FROM FUNNY RIVER FIRE SWIRLS OVER NORTHERN CANADA
Moderate Ozone AQI in California and Code Yellow PM2.5 AQI in Eastern US; Remnant Smoke from Alaska's Funny Fire
Continuing Smoke over Alaska and the Southwest region. Sulfates over Eastern U.S. cause Moderate AQI levels.
Funny River fire leads to elevated AQIs in Alaska
Weekend Edition: Moderate AQI in the Southeast and in Southern California
Moderate AQIs for Southeast
Moderate AQI in the eastern states: Funny River fire continues
Scattered Code Yellow Air Quality throughout United States; Dust in Dakotas
Weekend Edition: Santa Ana winds end and relief comes to Southern California
Bernardo and surrounding wildfires lead to elevated AOD in Southern California
Moderate AQI and NO2 in Mid-Atlantic; Smoke in Arizona and New Mexico
High AOD in Texas leads to poor air visibility
Weekend Edition: Few areas of moderate air quality; dust and haze in Southern California
Aerosols over Montana/Wyoming; Moderate AQIs east of Mississippi River
Climate Changes in the United States
Widespread Code Yellow AQI across Central and Eastern United States
Asian Dust in California and Smoke over the Southeastern US
Weekend Edition: Good air quality across the US
Aerosols over Alaska, generally good AQIs across the US; Cloud Capped Boundary Layer over Baltimore
Coarse Particulate and Moderate AQI over the Southwestern US
Unhealthy AQI in Texas most likely due to Dust blowing with high wind speeds.
Blowing dust pushing Southeast; Code Red AQI across Texas Panhandle
Weekend Edition: Dust continues to blow in the Southwest
Dust blowing over Southern Plains, but good to moderate AQIs across United States
Dust in the Gulf of Texas; Good AQI
Smoke from Agricultural over Central Plains and Southeastern US
Moderate AQI in the Appalachians is pushed out to sea
Moderate Ozone and PM2.5 AQI Along the Great Lakes and Mid-Atlantic States
Weekend Update: Fire activity in Plains and Great Lakes Regions. Dust Blowing across the Southwest region.
Smoke causing poor air quality over the Central Plains
Elevated AODs seen in Central Plains, Great Lakes, and Northwest
Code Orange in Southern California, Widespread fires in Central U.S.
Moderate AQI across the Southwestern U.S. Concentrated Fires Great Plains.
Scattered PM2.5 across the United States; Large Swath of Smoke in Gulf
Weekend Edition: Spring fire season is on in Oklahoma and Georgia
Smoke from Central Plains fires affecting air quality in KS/OK/TX
Good AQI; light smoke from numerous fires
Special Feature: Heartbleed impact on alg.umbc.edu
Agricultural Fires Cause of High AOD over the Mississippi Valley States, Kansas and Oklahoma
Fires in the Great Lakes Region raises AOD. Dust [PM10] blowing in Arizona.
Code Red AQI in New Jersey; Elevated AOD across Gulf
Weekend Edition: Air Quality is pretty good across the US
Moderate AQIs along East Coast, smoke plumes from agricultural burning continue
Smoke in North Carolina and Gulf of Mexico; High NO2 in Mid-Atlantic
Smoke from Agricultural Fires in Florida, Moderate PM2.5 AQI Levels in the Southeastern United States
Scattered areas of Moderate AQI in the Southeast and Mississippi Valley Regions
Elevated PM2.5 in Plains States; Critical Fire Weather out West
Weekend Edition: Code orange overnight in Oklahoma and fires in Kansas/OK
Moderate AQIs for the US, elevated Sulfates for east
Fires and smoke in the Southeast region; More dust in Texas-New Mexico-Oklahoma
Forecasted dust in Arizona does not materialize
Pardon our silence
Moderate AQI and Elevated NO2 in Great Lakes Region.
A St. Patrick's Day Code Green for Ozone in United States; Elevated AQI for PM2.5
Weekend Edition: Moderate air quality in the Southeast and some ozone picking up
Continuing smoke plumes in Central, Southeast US; Possible Smoke and Dust over Baltimore
Dust over Central US and Cloudy Skies over Baltimore
Fires in the Southeast persist. Elevated AOD over land and the Gulf of Mexico.
Code Red PM2.5 in Georgia; Plethora of fires in southeast
Weekend Edition: Stagnation episode in Illinois and Indiana
High NO2, poor air quality in Great Lakes
Moderate AQI and high NO2 in Mid-Atlantic and Great Lakes regions
Dust Aloft In New Mexico/Texas. Moderate PM2.5 AQI Levels in Eastern Half of the US
Moderate AQI across the Midwest region. Fires in the Southeast region.
Code Yellow PM2.5 AQI concentrated in East; March comes in like a lion
Weekend Edition: Clouds cover much of the US, fires in the US Southeast
Blowing dust in West Texas and Eastern New Mexico; elevated no2 in northeast
International feature 2: Global Precipitation Measurement Mission Launches
International feature 1: Haze Blows Across Northeastern Asia
Fires in Mississippi Valley and Florida;High NO2 over California and Northeastern US; Nitrate Particle Formation
Fires in the Southeast. Elevated AOD over land and the Gulf of Mexico.
Scattered Code Yellow AQI; elevated AOD in Arkansas
Weekend Edition: Wonderful Air Quality across the US
Poor air visibility in Texas and high AOD in Southwest, possibly due to dust
Moderate AQI in eastern states: Dust in Texas; Smoke off the Carolinas
Code Yellow to Orange AQI in California and the Eastern Half of the United States
Elevated NO2 and Temperature Inversions elevate AQI to Moderate in Mid Atlantic.
Code Yellow PM2.5 AQI throughout the Nation; Cluster of fires in Florida
Weekend Edition: Code Orange in San Joaquin Valley, Washington, and Pennsylvania; Kelut Volcano Images
Lovely air quality for Valentine's Day
Moderate AQI in the Great Lakes and west coast
Moderate PM2.5 AQI Across the Eastern Half of the United States; Australian pyrocumulonimbus cloud
Concentrated fires in Florida, Pacific Northwest, and Midwest regions.
Widespread Code Yellow AQI throughout the Nation; More crippling snow for Southeast/Northeast forecasted
Weekend Edition: Elevated aerosols in Colorado and Pennsylvania
Clouds again, but poor air quality in the Rockies
Limited aerosol data due to cloud coverage
Unhealthy AQIs at the North Pole
Elevated NO2 in the Great Lakes Region. North Pole, AK has highest AQI in US
Weekend Edition: Amy nails the forecast
Moderate AQIs across US, PM2.5 the main culprit
Poor AQI continues in Southern California; High NO2 in Mid-Atlantic and Great Lakes
Widespread Code Yellow AQI throughout the Nation; Concentrated Fires in Southern Plains
Code Red in California. Concentrated fires in Florida.
Yellow to Orange PM2.5 AQI Levels Continue in the Western US
Weekend Edition: Cold weather continues to stream out of Canada; Elevated PM in Oregon
Smoke blowing off of West Coast; elevated AOD in Texas
Dust/Sand in Nevada, California, and Oregon
Kings Canyon Fire Continue to Burn; Stagnant Air Quality Along the Western US
Code Red AQI in Pacific Northwest; Winter Storm Janus targets Mid-Atlantic
Weekend Edition: As drought is declared officially in California, fires continue
Colby fire in CA leads to elevated AQIs
Moderate AQI in Northeast, Northwest and California; Fires in southeast
Fires Along Texas Coastline; Unhealthy PM2.5 AQI in Oregon
Code Red in Pacific Northwest due to PM 2.5
Elevated PM2.5 and Red Flag Warning in Pacific Southwest
Weekend Edition: Dusty in the Southwest and South
Elevated AQIs in Northeast, Great Lakes, and West Coast
More about the polar vortex...Steam Fog over the Great Lakes
Code Yellow-Red PM2.5 in California; Clouds and Homogeneous Boundary Layer over Baltimore
Polar Vortex brings the big Freeze! Elevated PM 2.5 continues in California.
Code Red in San Joaquin Valley; Nation prepares for deep freeze from polar vortex
Weekend Edition: Still Code Red in the San Joaquin Valley
Good AQIs over much of East; Unhealthy AQIs in California
The Glory of the New Year
Happy New Year; Code Yellow to Orange in Southwestern United States; Homogeneous Boundary Layer over Baltimore
Continued Elevated PM 2.5 in Southwest region. Elevated Sulfates forecasted for eastern US
Elevated PM2.5 and fire weather in Pacific Southwest
Weekend Edition: Bad air quality in the San Joaquin Valley and Alabama
Unhealthy AQIs in the West; fires in the Midwest
Unhealthy PM2.5 in San Joaquin Valley Ca, Fires in the Central Plains
Merry Christmas. PM2.5 AQI range in California Yellow to Red.
Code Yellow and Orange along the Western US
Weekend Edition: Looking for Smaug
Elevated AQIs in Northeast
PM2.5 Fades in West, Fires in South, Moderate AQI in North East.
High PM2.5 concentrations in the West Coast; Light Smoke over the South from Agricultural Burns; Clouds over Baltimore
Elevated AQI in California due to PM 2.5, most likely nitrates.
Air stagnation and code red PM2.5 West persists
Weekend Edition: PM levels reach Code Red in many areas of the country
Unhealthy AQIs to the West
Moderate to Unhealthy AQI levels in Northern California and Oregon
Air stagnation drives Unhealthy PM2.5 across Pacific Northwest
Raised AQI values in Pacific Northwest due to residential and local fires.
Frigid Temperatures and Unhealthy PM2.5 AQI across Pacific Northwest
Weekend Edition: We may get a white Christmas!
Cloud cover hinders air quality data today; low AQIs across US
International Feature: Wonders in the Antarctic Sea and Sky
Moderate AQI in the Northeast; Some fires in North-pacific region
Code Yellow and Orange PM2.5 AQI in Maryland; Clouds and Shallow PBL over Baltimore
Code Oranges in Northeast due to PM 2.5.
Elevated PM2.5 across large swath of Eastern United States
Weekend Edition: West and northwest with elevated aerosols
Code Red AQIs in Washington; large group of fires over Midwest and Southwest
Good AQI on thanksgiving day
Code Yellow to Orange along the West Coast; NO2/PM2.5 Correlation
Enhanced PM 2.5 in California causing Code oranges. Light fires in the Pacific Southwest. Massive storm moves over the eastern coast.
Unhealthy for Sensitive Groups PM2.5 levels across Pacific North/Southwest
Weekend Edition: Clouds, Snow and Smoke. White, white, white.
Moderate AQIs; Clouds hinder air quality data availability
Moderate AQI in different states; Fires in Pacific Northwest
Moderate PM2.5 in California and Texas
Weekend Edition: Fires in the East, Unhealthy for Sensitive Groups in three locations
Moderate AQIs across US; elevated NO2 levels in New England and Upper Plains States
Elevated PM2.5 across Pacific North/Southwest
Fires continue in Southeast to increase AOD.
Scattered Moderate PM2.5 conditions throughout United States
Weekend Edition: Plus c'est change, grumpy analysis edition
Good air quality; elevated NO2 values
International Feature: Volcanic Plumes Tower over Mount Etna
Moderate PM2.5 levels continue in California and Washington
Special Feature: Supertyphoon Haiyan hits the Philippines
Moderate PM2.5 in the West Coast; Clouds and Homogeneous PBL over Baltimore
Increase in NO2 in the Eastern US. Strong fires activity in Pacific Northwest and Southeast
Code Yellow air quality across West, Great Lakes, and Southeast
Weekend Edition: Raking leaves edition
Fires in Pacific Northwest, moderate AQIs on West Coast
Moderate AQI in East and West; NO2 in California
Moderate PM2.5 in the Pacific Northwest and East of Ohio River Valley; Blowing Dust in Arizona
Layer Aloft over UMBC. High Sulfates in Ohio River/Great Lakes Valley.
Elevated air quality across Southeast; Good AQI elsewhere
Weekend Edition: Continued poor air quality in the California South Coast
Unhealthy AQIs in Southern California
Moderate Air Quality in the West and Mid-Atlantic; High NO2 levels
Moderate PM2.5 in the West Coast; Smoke over the Pacific Northwest
PM 2.5 causing many code yellows across the eastern U.S. coast.
Fires and Smoke continue in Pacific Northwest; Good Air Quality Across Most of United States
Weekend Edition: Lost in Space
Fires, some smoke over West Coast
Good Air Quality in the Nation; NO2 detected in the Northeast
Code Yellows across the Great Lakes region.
Good Air Quality for Majority of United States; Elevated PM2.5 across Southeast
Weekend Edition: Moderate AQI along Mississippi Valley and in West
Elevated NO2 over Great Lakes, Fires in Southeast
Some smoke in Arizona; Good Air quality on most of the Nation
Fires, but little smoke over America
Texas fires increase AOD. Houston/Galveston has code orange due to ozone.
Aerosols over the Coast of New England; High NO2 over California
Wet Weekend Edition: Ozone Season is now over and weather starts
Moderate Air Quality in East
Moderate AQI in the Eastern states and California; High AOD
Moderate AQIs, elevated NO2 concentrations for East
Code yellows in California for PM2.5. Thankfully most of our federal science data source websites are still available!
Code Orange PM2.5 AQI in Idaho; Cloud Capped Boundary Layer in Baltimore
Weekend Edition: Clear air over much of the US and Clouds over Houston
Moderate Air Quality Over Center of US
Global CO2 update; Less fires and smoke in the US; High AOD in central and South Pacific
Small fires in Texas cause moderate and unhealthy AQIs
Code Orange in San Antonio due to Ozone. Raised AOD from fires in the Plain Region/Northern Texas.
Smog Blog Turns 10; High AOD and Moderate Ozone in Texas
Weekend Edition: Fall is coming edition
Moderate Air Quality in East, California
More about SEAC4RS Mission (Video)
Moderate AQIs for Mississippi Valley and Plains States
Fires in the Southeast. Code orange in the San Fernando Valley.
Moderate PM2.5 over the Southeastern US
Weekend Edition: Pleasant Change to the Fire Weather
Moderate Air Quality in South, some Fires, Smoke
Moderate AQI and smoke over Texas and Illinois
Smoke plume, Code Red AQIs in Mid-Atlantic
High temperatures/humidity cause code oranges and yellows from ozone in Mid-Atlantic and Great Lakes regions.
Rim Fire Code Red PM2.5 AQI in California and Moderate PM2.5 Along the Ohio River Valley
Weekend Edition: Still smoking out west and smoke in the middle of the country
Smoke Plume over Midwest, Moderate Air Quality in South, Fires Burn
Smoke over all Central US and California/Nevada
Special Feature: An early look at Houston from DISCOVER-AQ
Smoke plume over Midwest, unhealthy AQIs in California
Rim Fire (Near Yosemite) continues to burn, causing many code reds in CA and NV. Additionally, high concentrations of fires in the Mississippi Valley and Plains regions.
Smoke from Rim Fire Along the Northern Rockies and Great Plains
Weekend Edition: Breaking up the monotony...
Bad AQI in west, Moderate AQI in East
More fires and smoke in the west; Moderate AQI in the east
Unhealthy AQIs stem from wildfires
Rim Fire (Near Yosemite) continues to burn, causing many code reds in CA and NV.
Weekend Edition: Rim Fire in California continues to influence much of the Country
Smoke, smoke and more smoke
Remnant Smoke stretching East
Code Red near Sacramento,CA, Missoula, MO, and Portland,OR from wildfires.
Wildfire Smoke Dispersed Across the US; Moderate AQI Levels over Smoke Locations
Weekend Edition: The West Continues to Burn; Idaho Resorts Endangered
Idaho Fire, Moderate Air Quality
More fires and more smoke extending south
Continuing wildfires lead to Hazardous AQIs around Boise
Various Code Reds in the Pacific Northwest region from wildfire smoke.
Northwest fires continue; Elevated AQIs for Idaho and Southwest
Weekend Edition: Beaver Creek Complex Fire blows up in Idaho
Moderate Air Quality, More Smoke
Moderate Air Quality Abundant, Fires, Canadian smoke
Dust over Texas and the Gulf of Mexico; Remnant Smoke from Pacific Northwest Fires
Poor AQ in the Pacific Northwest due to ongoing pm 2.5 from smoke.
Smoke and Code Red PM2.5 Levels in Oregon; Cloud Capped Boundary Layer in Baltimore
Weekend Edition: Fires continue to plague the West
Moderate Air Quality in South, Northern California is Code Red, Smoke in Canada
International Feature: A Persistent Plume over the Red Sea
Fires continue to take place; Smoke and Moderate PM2.5 over the US.
Code Red in PM2.5 Concentrations in Oregon; Smoke over the Pacific Northwest and Canada; Cloudy Skies over Baltimore
Fires continue in Pacific Northwest causing Code Red/Purple. Layers aloft in Baltimore.
Wildfires in California continue to produce unhealthy AQI values
Weekend Edition: Fires Breakout through the West and in Canada
Smoke Abound, Moderate Air Quality
Fires and Smoke in Canada and California; Moderate AQI
Residual fires continue to affect upper midwest; moderate AQI for Southeast
Smoke Throughout the Great Lakes. Code orange forecasted in California for Ozone and PM 2.5
Smoke in the Western Half of the United States; Moderate PM2.5 AQI levels in the Northeastern States, Florida, Texas, and California
Weekend Edition: Elevated ozone in California, moderate AQI in the East
Moderate Air Quality in East, Lizard Shaped Smoke Patch
Moderate AQU in the East, Smoke in California, Idaho, Montana and Canada
Smoke over the West from Mountain Center Fires in California, Hazy Skies and Moderate PM2.5 AQI Levels in the Eastern US
Fire and Smoke Activity in the Rocky Mountain Region. Also code oranges in Boise, ID for ozone.
Heat Advisory in Effect till Friday; Moderate AQI Levels Along the US, and Cloud Capped PBL in Baltimore;
Weekend Edition: Air quality improves over North America
Good AQI in the Nation: Fires and Smoke still present over the US and Canada
Code Red forecasted in southern California and code orange for central Colorado for ozone. Fires continue to burn in Plains region and Canada.
Smoke over Canada and East of Rocky Mountains; Moderate AQI Levels and Cloudy Skies over Baltimore
Weekend Edition: Poor Quebec
Moderate Air Quality, Dissipated Smoke
Moderate PM2.5 and Smoke for several wildfires on Independence Day
Heavy Smoke moves in to deliver code red in the Northeast. Lighter plumes across the rest of the country.
Red Flag Warning over the Western US and Flood Watch over the East; Alaska and Canadian Smoke and Moderate AQI levels Across the US
Weekend Edition: Major Fires Continue Across US and Smoke Seen in Europe
Smoke, Colorado fire, Moderate Air Quality
Moderate PM2.5 in eastern US; Fires and Smoke in Alaska and Central Plains
Code Orange/Yellow Forecasted for Mid-Atlantic. Smoke plumes stretching eastward in the Great Lakes and Mississippi Valley.
Special Feature: Singapore is smothered by a blanket of smoke
Weekend Edition: Major pyrocumulus blow up in Colorado
Plenty of Smoke and Plenty of Orange
Smoke Traveling Across Alaska, Great Lakes, and Southwest
Fire Activity in the lower half of the U.S. Large plume covering Alaska and Great Lakes Region.
Moderate PM2.5 AQI in Eastern Half of United States; Smoke from Forest Fires over Canada; Cloud Capped Boundary Layer over Baltimore
Weekend Edition: Smoke is widespread across North America
3 Smoke Plumes, 2 bands of Fires, 1 Code Orange
Moderate PM2.5: Black Forest fire images
Wildfires from New Mexico, Colorado, and Arizona could affect air quality later in the week
Fires and Smoke in the Pacific Northwest. Code Orange forecasted in TX, IN, & IL for Ozone.
Fires and Dust in the Southern US; Canadian Smoke and Moderate PM2.5 AQI in the Great Lakes
Weekend Edition: Summer pollution season moves into full swing
Smoke in Northern Plains and South-Central Canada. Code Orange in San Bernardino, Ca from increased ozone.
Continuing moderate AQI levels across Great Lakes and Mid-Atlantic
Smoke in Texas and Northwest. Sulfates across Great Lakes/Mid-Atlantic. Layers aloft at UMBC.
Code Orange Ozone AQI in Texas and Smoke over Canada and Southwest US
Weekend Edition: Arrrrrrghhh! Hating to fly blind edition.
Moderate Air Quality, Smoke Plume in Northeast
Moderate PM2.5 and Sulfate in North-Atlantic Region
Elevated Ozone and PM2.5 widespread throughout the United States
Increased AOD throughout the Mississippi Valley and Southeast.
Smoke over Gulf of Mexico; Moderate AQI levels in Southern California/Arizona and the Ohio River Valley
Weekend Edition: Ozone is elevated in Southern California; Forecasted dust in the Southwest
Two Smoke Plumes, Moderate Air Quality in Southwest
Smoke continues to affect Southern Texas; Moderate to Unhealthy ozone levels in the Pacific Southwest
Smoke causes code Orange in southern TX. Plumes move through center of country.
Moderate Ozone and PM2.5 in the Southern US; Smoke from Agricultural Fires over the Gulf of Mexico
Weekend Edition: Smoke affects upper plains states and Texas
Moderate Air Quality, Large Gulf Smoke Plume
Smoke plumes impact south and Great Lakes; Code orange PM2.5 in Great Lakes and Mid-Atlantic
Raised AOD from smoke plumes in Texas and Southeast. Forecasted Code Orange in San Bernardino, CA.
Moderate to Unhealthy Ozone AQI in Southern US; Smoke over the Southeast; Cloud Capped Boundary Layer over Baltimore
Special Feature: Major Tom returns to Earth
Weekend Edition: Surface AQ is pretty fair across the US; Burning in Manitoba brings smoke to Midwest
SPECIAL FEATURE: VIIRS has arrived on IDEA
Yellow Patches, Smoke Plumes in North and Gulf
Good and Moderate AQI; Lots of smoke in the Gulf of Mexico
Moderate air quality in South, Midwest and California
Fires in Texas increasing AOD. Forecasted Code Orange in Houston due to ozone.
Weekend Edition: Ozone and PM are still elevated in California but fires abate
California Fire and Smoke, Plain Fires
Fires and smoke in California: Dust from Asia in the Central Plains
Elevated AOD across Gulf; Scattered Moderate PM2.5 throughout US
Good to Moderate AQI across Northeast. Dust blowing in AZ.
Moderate Ozone and PM2.5 Concentrations over the Great Lakes and Northeastern United States; Smoke over the Gulf of Mexico
Weekend Edition: Moderate air quality in the southeast, California and Alberta
Patches of Moderate Air Quality
Good Air Quality; More smoke in Gulf of Mexico
Good to moderate air quality; Code orange for ozone in California
Fires in the Southeast region but only light plumes. Moderate AQ due to increased PM2.5 in California.
Smoke over Central America; Particulate Aloft over Baltimore
Weekend Edition: Air quality is generally good across US except Ozone coming up in California
Good Air quality over nation, Large Smoke Plume over Gulf of Mexico
Dense smoke from Mexico continues moving to Texas
Fires in the Yucatan Peninsula and Unhealthy PM2.5 AQI in Texas
Fire activity in the Southeast increases AOD as it moves north.
Large area of smoke over Gulf; Elevated PM2.5 in south
Weekend Edition: fire season in Central America; Moderate PM in Southern California
Good Air Quality over most of Nation, Smoke Plume in Gulf of Mexico
Smoke in the Gulf of Mexico and Mid-Atlantic coast
Smoke and Moderate PM2.5 AQI Levels over the Southeastern and Mid-Atlantic United States; Cloudy skies over Baltimore
Fire activity in the Southeast increases AOD. Dust blowing in the Pacific Southwest causes code red.
Unhealthy air quality in Arizona
Weekend Edition: Midwest haze is moving eastward; Elevated PM in Alberta
PM 2.5 in Great Lakes, Northern Mississippi Valley regions
Good AQI in most of the US; Fires in central states
Scattered moderate levels of PM2.5, but overall good air quality in most of the US
Fires continue in the Southeast. Sulfates across the Mid-Atlantic.
Scattered Moderate PM2.5 conditions; Unknown aerosol moving southeast from Great Lakes
Weekend Edition: Good air quality in the West; Moderate levels of PM2.5 and ozone in the East
Large Smoke Plume, Stripe of Moderate AQI
Smoke detected in the South due to fires
Smoke and Moderate PM2.5 in the Southeastern United States;Cloudy Skies Over Baltimore
Strong fire activity in the Southeast, Mississippi Valley and Texas.
Good to moderate air quality throughout the nation; Fires continue in the South
Weekend Edition: Large area of remnant smoke over Gulf; Widespread Moderate PM2.5 persists across United States
Patches of Moderate AQI throughout Nation
Fires in South US and Central America
Light Smoke over Southeastern States; PM2.5 Concentrations over Texas and California
Fires in the Southeast region with large plume.
Scatered Moderate PM2.5; Blowing dust in Southeast Texas
Weekend Edition: Agricultural burns continue in the south; Hazy in LA
Moderate AQI over parts of the nation, Fires Continue in Southeast
FIRES AND SMOKE IN THE US SOUTHEAST
Smoke and Moderate PM2.5 over the Northwestern Gulf of Mexico
Cold front brings rain and improved AQ to Eastern U.S.
Weekend Edition: Fires in the US Southeast; Generally cloudy across the US
Moderate AQI over Plain States and Mississippi Valley, Fires in Southeast
Good and Moderate AQI; SOme fires in Texas Oklahoma and Florida
Code Yellow and Orange in the Pacific Northwest and Great Lakes States; Light Smoke over the Gulf of Mexico
Fires in the Southeast region with large plume. Dust blowing in TX/OK/NM
Elevated PM2.5 and blowing dust in Southwest alongside critical fire weather
Poor air quality in Utah, Texas/New Mexico and Alabama/Georgia
Weekend edition: Fires in Alabama and continued poor air quality in Utah
Good air quality in most of the US; Moderate to Unhealthy air quality in Idaho and Utah
Good Air Quality; Some small fires in Tx and Fl
Smoke over the Gulf of Mexico; Moderate PM2.5 in California, Great Plains and Great Lakes States
Fires in the Southeast, Plains and Texas region. Dust blowing in Texas and Sulfates across the Plains.
Unhealthy for Sensitive Groups AQI in Great Lakes and Texas; Critical Fire Weather in South Texas
Weekend Edition: Code Green across the US
Good to moderate air quality in most of the US
Fires in Florida; Smoke in the Gulf of Mexico
Code Orange PM2.5 and PM10 in Utah and Texas
Raised P.M. 2.5 in Utah, Fires continue in the Southeast
Raised Ozone AQI in Utah; Scattered Moderate PM2.5 throughout US
President's Day Weekend Edition: Utah struggles with its air quality
Utah experiences unhealthy levels of PM2.5 and ozone
Special Feature: Congratulations to EUMETSAT for catching a meteor
Unhealthy PM2.5 levels for sensitive groups in Utah; Moderate levels in Mid-Atlantic and Ca.
Air Quality Action Day in Utah
Fires in the Southeast, Plains and Texas region. Dust blowing in Southern California and Texas.
Scattered Moderate PM2.5 conditions over snowed-in Northeast and Pacific Northwest
Weekend edition: Dust storm hits El Paso and Snow Storm hits Northeast
Unhealthy for Sensitive Groups AQI in Pacific Southwest; Unknown aerosols over Gulf
Air Quality Action Day in Utah; Smoke east of the Carolinas; Homogeneous PBL over Baltimore
Strong fires and smoke continue in Southeast region. Raised AOD from fires also in Plains/Mississippi Valley.
PM2.5 Code Orange in California, Oregon and Utah
Superbowl Weekend Edition! Stagnant conditions continue to plague the San Joaquin Valley
Relatively good air quality in the US
Raised AOD in Southeast and Mississippi Valley. High levels of NO2.
Code Orange PM2.5 in Oregon; Mexican smoke over Western Gulf of Mexico
Moderate PM2.5 levels in Eastern states;
Air quality conditions across west continue to improve; Widespread Moderate PM2.5 AQI in East
Weekend edition: west coast weather relieves air quality in California and Utah
Follow-up on Utah air quality crisis; Moderate PM2.5 concentrations in Oklahoma and Eastern US
Unhealthy PM2.5 levels in Utah continue: Fires and Smoke in Southeast
Code Red PM2.5 Concentrations in Utah due to Strong Temperature Inversions;
Continuing PM 2.5 in Pacific Northwest, Large concentration of fires in Southeast/Mississippi Valley.
Unhealthy PM2.5 and Ozone continue in West; Elevated AOD in Southeast
Weekend Edition: High Pressure dominates the West and exacerbates poor air quality trend
Bad air quality continues in the West, with code red in Southeast Oregon
Unhealthy PM2.5 for sensitive groups in Ca and UT; High AOD in Texas
Air Quality Action Day in Utah; Dust over western Mexico; DISCOVER-AQ 2014 first flight
Code Red forecasted in Pacific Northwest for wood burning (ban in effect now). Sulfates and smoke raise AOD along eastern coast and into Gulf of Mexico. Strong dust blowing in Pacific Southwest.
Unhealthy for Sensitive Groups AQI in Pacific Northwest; Elevated AOD along portions of eastern seaboard
Weekend edition: dust storm spotted from orbit and one amazing photo from Australia
Unhealthy PM2.5 in northeast Utah, Moderate AQI across the Pacific southwest and mid-atlantic
Bad AQI in Utah persists; Australia on fire!
Air Quality in Utah Continues to be Unhealthy; Australian fire images from ISS
Unhealthy AQI continues in Utah, with hopes of winter storm moving in Thurs. to help. Dust blowing across southern California.
Unhealthy air quality (code red) continues in Northern Utah
0105 Weekend Edition: Air Quality Action Days across the US
Air quality Action Day continues in Utah; PM2.5 code orange also observed in Central California and in Southern Oregon
Moderate AQI and high NO2 in the Great Lakes region
Special Feature: We have a new contributor and he's out of this world
Air Quality Action Day and Hazardous Weather Outlook for Utah due to Temperature Inversions; Homogeneous Boundary Layer in Baltimore
Out with the old and in with the fireworks
End of Year Weekend Edition: Cloudy over much of the US and generally good air quality
Unhealthy levels of PM2.5 for sensitive groups in Northeastern Idaho, Southwestern Montana and Northern California
Winter storms in the West and Eastern United States; PM2.5 Air Quality Action Day in Colorado
Moderate and Unhealthy for Sensitive Groups AQI in Southern Plains, Great Lakes and Mid Atlantic states
Weekend edition: Merry Christmas and the air quality across the country is good!
Moderate AQI in the west; Fires and Dust in the Great Plains
Blizzard Warning from Colorado to Great Lakes States; Cloud Capped Boundary Layer over Baltimore
Small concentrations of fires in Florida and Louisiana. Dust blowing in West TX.
Blowing dust across Southern Plains; Moderate PM2.5 conditions consistent with this weekend
Weekend edition: Spots of moderate PM air quality in PA, KY, CA
EPA revises the National Air Quality Standards for PM2.5; Moderate PM2.5 concentrations across the US
Moderate AQI in in the Lakes and Mid-Atlantic region; High AOD and NO2 in the great lakes
Light smoke over Gulf of Mexico and Central United States
Fires across the country with light plumes and low AOD.
Clean air in most of the US, except for California
Weekend edition: clouds continue over much of the US; elevated PM in California
Cloudy skies persist over East; Moderate air quality observed in Northeast
Good PM2.5 levels in the US; High NO2 in Northeast
Cold Front Along Nation Improves Air Quality
Widespread warmth alongside elevated PM2.5 continues across the East
Weekend edition: PM is elevated throughout much of the east
The Worst Air Quality in the Country is in the Northeast
Moderate PM2.5 in Mid-Atlantic and Great Lakes
Code Orange PM2.5 in California; Homogeneous Cloud Capped Boundary Layer and Aerosols Aloft over Baltimore
Continuing PM 2.5 in San Joaquin Valley, Increased values of NO2 across the country.
PM2.5 Code Orange in San Joaquin Valley; Moderate concentrations in the East
Weekend edition: Haze in the San Joaquin Valley and fires in Louisiana
Moderate PM2.5 levels in the Northeast, South and West Coast
MOderate AQI in eastern USA on Thanksgiving day
Moderate PM2.5 and Smoke over the Ohio River Valley; Homogeneous Boundary Layer and Good Air Quality in Baltimore
Increase in fire activity in Mississippi Valley and Great Lakes region.
Moderate PM2.5 conditions consistent with this weekend
Weekend edition: Winter dispersion sets in and dominates the air quality in the east
Widespread Moderate PM2.5; Elevated surface sulfate concentrations over Great Lakes
Moderate AQI in the Lakes and California; High NO2 in Northeast
Good Air Quality Along the United States; Homogeneous Boundary Layer over Baltimore
Moderate fire activity in the Pacific Southwest and Mississippi Valley
Unhealthy AQI in California; Blowing dust traverses east
Weekend edition: big dust storm across West Texas and New Mexico
Moderate PM2.5 levels in the Midwest and Mississippi Valley
Smoke in Kansas, Florida and Gulf of Mexico
Smoke in the Gulf of Mexico and Dust over Alaska
Moderate fire activity in the Pacific Northwest and Mississippi Valley
Scattered Moderate AQI; Unhealthy for Sensitive Groups in Oregon and Southern California
Weekend edition: Fires in the southeast aggravate air quality; Moderate haze in California and British Columbia
Moderate air quality in Arkansas, North Dakota, and California
Moderate AQI in the Plains and Mississippi Valley; Smoke in New Mexico
A-train view of Hurricane Sandy
Quiescent air quality as zealous Hurricane Sandy traverses the Mid-Atlantic/Northeast
Weekend Edition: Almost nothing unusual in terms of air quality, except Sandy
Good air quality throughout most of the US; MODIS Aqua image of Hurricane Sandy
High NO2 in Northeast; glacial flour dust storm continues
Glacial Flour Dust in Alaska; Moderate PM2.5 and Hazy Skies in the Mid-Atlantic and Great Lakes States
Light fires in the Southeast. Dust continues blowing in Southwest.
SPECIAL FEATURE: NOAA Announces Termination of their Air Quality Forecasting
Small smoke plumes across the Southeast; Very Unhealthy PM2.5 in Pacific Northwest
Weekend Edition: Generally good air quality across the nation; Fires in south
Dust from Nebraska is predicted to head eastward to mid-Atlantic
Good AQI; High NO2 in Northeast region
Light smoke over the Pacific Northwest; Cloudy skies over Baltimore
Fires continue without much smoke emission. Dust in Nevada, California.
Air quality conditions follow seasonal fall pattern
Weekend edition: air quality improves as we move into fall.
Good air quality with exception of Northwest and Southeast
Good AQI; Small fires and light smoke in West
Smoke over the Pacific Northwest; Cloudy skies over Baltimore
Fires continue in Pacific Northwest. Dust in Nevada, California.
Moderate to Unhealthy PM2.5 over Pacific Northwest; Good Air Quality elsewhere contines
Weekend edition: Unhealthy levels of PM2.5 in Northwest and Texas; Good air quality elsewhere
Moderate air quality in the Mid-Atlantic, Mississippi Valley; Peak of code red in North Dakota and Washington
Moderate AQI over the Nation; Smoke in West and Mississippi Valley
Fires in the Pacific Northwest Continue to Burn; Moderate to Unhealthy for Sensitive Groups Ozone AQI in Texas, Louisiana and California
Smoke from Texas fires, dust in the Southwest and high ozone in Houston, TX
Narrow band of smoke across Plain States
Weekend edition: Smoke emissions reduce in the northwest; fires in the prairies
Hazardous levels of PM2.5 and high AOD in Montana and Washington; Northwestern smoke still observed over the East Coast
More fires in Washington; Smoke aloft over Baltimore
Wildfires in the Pacific Northwest Continue to Burn, with Smoke Moving East
Fires continue in the Northwest and Canada. Smoke over Baltimore.
Extremely elevated AOD over Pacific NW; Critical fire weather over majority Minnesota /Oklahoma
Special Feature: A birthday present to the Smog Blog from Earth Observatory
Weekend edition: Another appalling week for smoke in the Northwest
Elevated AOD over Central Plains as Pacific NW smoke layer traverses southeast
Very unhealthy PM2.5 levels in Northwest; Smoke moving southward to the plains
Unhealthy to Hazardous PM2.5 AQI Levels in the Pacific Northwest due Wildfire Smoke
Fires in the Pacific Northwest continue.
Smoke from the Northwestern fires observed over Texas, Great Lakes and Northeast
Weekend edition: Bad fire weather in the west breeds bad fires in the west
Critical fire weather expected over northern Plain States
Poor Air Quality due to the fires; Smoke over the Atlantic coast
Pacific Northwest Fires Continue to Burn, and Smoke Aloft Over Baltimore
Continued Smoke and Debris in the Pacific Northwest
Updates on Idaho/Montana air quality
Weekend edition: Air Quality improves across the US; Still problems in Idaho
Unhealthy air quality in Idaho and Southwestern Montana; Good to moderate air quality elsewhere
Good AQI; Fires persist and smoke reaches the east coast again
Unhealthy PM2.5 Concentrations in Idaho and Smoke over Pacific Northwest and Central Plains States
Smoke and more smoke. Major smoke plume crossing the north of US.
Smoke continues to billow from wildfires in Idaho, Code Orange and Red PM2.5 and Ozone AQI
Weekend edition: Isaac moves northeasterly, pushing haze ahead of it
Favorable upper-level winds continue to transmit band of smoke from Pacific to Atlantic coast
Smoke from Pacific Northwest reaches the east coast
Smoke over Pacific Northwest and Plain States; Storm surges and local flooding warnings due to Isaac
Fires continue in the Pacific Northwest. High Ozone in Houston.
Elevated PM2.5 over Pacific Northwest, Mississippi Valley, and Great Lakes; Tropical Storm Isaac crawling towards Gulf Coast
Weekend Edition: Fires and Smoke continue in Pacific Northwest causing large increases of AOD
Poor air quality continues in Northern California, Idaho, Central US, Midwest and Northeast
Hazardous AQI values continuing in Yankee Hill, CA. Large East Coast ozone values.
Smoke over the Pacific Northwest; Air Quality Health Advisory in Northern California and Code Purple PM2.5 in Yankee Hill
Special Feature: Cross-state Air Pollution Rule is Vacated by DC Court
Unhealthy PM2.5 levels for sensitive groups in California due to smoke; Moderate Ozone in East
West fires observed by night; smoke proceeds toward Gulf of Mexico
Weekend edition: Rain clears some smoke from the west
Unhealthy levels of ozone and PM2.5 in the Pacific Northwest and East Coast
Large amounts of smoke from fires in the West
Dense Smoke over the Western Half of the United States; Cloud Capped Boundary Layer and Smoke Over Baltimore
Fires across most of the Western part of The U.S. High ozone levels in California, high temps not helping.
Moderate to thick remnant smoke traverse southeast; Code Red and Purple AQI over Pacific Northwest
Weekend edition: Smoke covers nearly half of the North American continent; Fires in California
Ozone levels improve in the East; Smoke and bad air quality persist in the West
Large amount of smoke from fires in Idaho and Canada; Moderate Ozone levels
Smoke over the Western United States; Code Orange Ozone Concentrations in the Eastern US, and Hazy Boundary Layer in Baltimore
Smoke continues in multiple U.S. Regions and Canada. High ozone levels forecasted in Great Lakes Region.
Unhealty ozone levels in Central US and Southern California; High levels of PM2.5 in Idaho
Weekend edition: Damaging wildfires in Oklahoma; Widespread haze across the Great Lakes
Moderate to unhealthy levels of ozone continue in the Midwest, Northeast and California
High Ozone levels; Fires in the Rocky Mountains, Pacific Northwest and Canada
Smoke along the Western and Great Lakes States; Code Yellow to Orange Ozone AQI in the Great Lakes, Mississippi Valley States and California
Congratulations to Dr. Ray Hoff on winning NASA's Distinguished Public Service Medal
Fires continue in Canada and central U.S.
Elevated Ozone over Great Lakes and MS Valley; Rapid Creek fire emits large smoke plumes
Special Feature: Two-thirds of the US is experiencing drought
Weekend edition: relatively quiet day in the US for air quality
Saharan dust remains over the Atlantic, Bahamas and Southeast US
Good and Moderate AQI; Smoke from fires in the Plains and Canada
Dust and Smoke Along Gulf of Mexico and Atlantic Ocean; Moderate O3 AQI over Great Lakes States; Clean Airmass over Baltimore
Fires continue in Canada and central U.S.,Large Saharan Dust Plume almost reaching Southeast Region
Very Unhealthy Ozone conditions in Michigan; Saharan dust marches west
Weekend edition: Hot through the prairie states; remnant smoke from Saskatchewan
Air quality ranging from good to moderate; Remnant smoke still lingers over US and Canada
Good AQI over the US; Saharan dust reaching the east coast
Smoke and Code Orange O3 concentrations in the Mid-Atlantic and Northeastern States
Smoke from Canadian Fires Continues to pour into Northeast. Increased ozone formation also gives code red to CT.
Heavy remnant smoke over Canada advances towards United States; Unhealthy Ozone AQI over Great Lakes
Weekend edition: Canadian fires continue to pour smoke southeastward
Very high and unhealthy PM2.5 levels in Alberta, Canada; Moderate to unhealthy air quality across the US
Code Red in California Continues, Raised AOD from continuing wildfires across western part of the country.
High AOD Due to Smoke of Wildfires in the Pacific NW and Canada; Moderate to Unhealthy Ozone Concentrations over California, Great Lakes and Mid-Atlantic States
Good AQI over the Nation; Large Fires in Pacific Northwest
Diminishing heatwave helps dwindle poor air quality
Weekend edition: Hot enough fur ya?
High AOD and unhealthy levels of ozone persist over Eastern US
Code Yellow and Orange AQI PM2.5 and Ozone Concentrations; Smoke Aloft over the Eastern Half of the United States
Unhealthy for Sensitive Groups through the Rockies
Large smoke still covering most of U.S. Heavy ozone causes code red in Grand Rapids, MI.
Heat wave, smoke, and high ozone levels persist
Weekend Edition: Large wildfires and unhealthy ozone conditions continue; despite passing of widespread severe wind event
Unhealthy ozone levels in the Lakes region; Smoke reaches the East coast
Smoke continue covering a huge part of the nation; Unhealthy Ozone levels
Code Purple in Texas due to combined smoke and ozone.
Triple digit temperatures and peak ozone levels across southern plains
Smoke Aloft and Red Flag Warning in Rocky Mountain States; Code Orange Ozone AQI levels in the Eastern Half of the United States
Poor Air Quality in the Eastern US
Smoke Aloft from Colorado and Midwest US Over Baltimore; Code Orange and Yellow Ozone and PM2.5 concentrations along the Eastern United States
Fires concentrated in Southeast Region, with Strong fires in Colorado and N.C.
Moderate to Unhealthy for Sensitive Groups AQI continues
Weekend edition: Dust storm in Arizona and fires/smoke updates
Unhealthy Ozone levels in Great Lakes Region
Fires and smoke from fires in Colorado persist
Smoke over the Central US and Code Orange PM2.5 in Colorado; Clouds over Baltimore
Smoke across Central U.S. Ozone causes Code Orange for California. Dust in East CA/West NV
Broad area of remnant smoke impacting Central/Southern Plains & Northeast
Weekend edition: Little Bear fire sends smoke over Texas
Code Orange and high NO2 levels in southern California; Smoke continues being emitted by Whitewater-Baldy fire;
Good to Moderate AQI levels; Fires and smofe from fires in New Mexico and Canada
Moderate Ozone in Southwest, Rocky Mountain, Plains States; Smoke over Plains States
Fires in Mississippi Valley and Smoke Across Texas and Southwest Region. Dust/Sand Blowing causes Code Red in CA.
For one day, speaking out on muzzling science is more important
Weekend wrap-up: Moderate to unhealthy ozone levels in Southwestern US;
Code Red Ozone in Texas and California; Smoke from New Mexico Forest Fire Spreads West
Good AQI; Smoke and fires persit
Smoke of Baldy/Whitewater New Mexico Forest Fire along the Gulf of Mexico and Southern Plains
Fires and Smoke continue to spread; Moderate PM2.5 in eastern US
Shield of smoke continues over Eastern US; Moderate to Unhealthy AQI across Great Lakes and Southeast
Sunday update: Smoke continues to build in the heartland
Weekend edition: Critical fire risk continues in NM; Baldy Fire Smoke Saturates Louisiana
Baldy/Whitewater Wild Fire Continues as Smoke from this fire travels eastward
Moderate PM2.5 and Ozone over the US; Fires and a lot of smoke
Red Flag Warnings and Whitewater/Baldy Fires in the Pacific Southwest
Smoke covers the Southeast due to wildfires. Siberian smoke still apparent. High surface ozone in Texas and California.
Smoke From Siberian Fires Still Observed over North America; Wildfires in Arizona and New Mexico; Code Orange AQI Levels in California
Aerosol layers aloft over the Mid-Atlantic: Wrap-up from this last week
Quiet weather pattern doesn't bode well for lingering smoke layers over Mid-West
Smoke from Siberia reaches the US and Canada; Moderate AQI
Smoke over Canada and Mexico.
Large Smoke Continues to Move Across Country
Large swath of Asian smoke observed over US; Moderate AQI continues
Moderate levels of ozone across the US, with unhealthy levels in Southern California
Ozone continues to plague southern California; Mexican smoke fills the Caribbean
Moderate AQI Levels Continue in California
Smoke over the Dakotas; Asian Dust over the Pacific
Moderate PM2.5 AQI in California; Smoke over the Gulf of Mexico; Asian dust over Central United States
Fires cause raised AOD in western Florida. Smoke from Mexico moving North.
Isolated Moderate AQI continues; Elevated AOD juxtaposed to FL peninsula
Smoke across N and S Florida; Isolated moderate levels in midwest
Fires and Smoke in Southern US; Moderate PM2.5 and Ozone levels
Moderate AQI Levels in the Mid-Atlantic, Pacific Southwest, southern Plains and Rocky Mountains States
Fires, dust and moderate PM2.5 today in the US
Smoke over the Carolinas and Central America; Moderate PM2.5 in the Eastern U.S.
Layer of dust moves in through the western part of U.S.
International Special: Dust Blowing from Western Africa
Scattered Code Yellow AQI continues; Unknown Aerosols over northern Plain States
Weekend summary:Fire in Michigan (?), Level Yellow in midwest, fires in Mexico
Where did we go?
Code Orange PM2.5 Levels Continue in El Paso, TX; Code Orange Ozone Levels in Colorado, Air Quality Action Day Declared until 4pm Saturday
Unhealthy PM2.5 levels in El Paso, NM
Moderate Ozone Concentrations in the Mississippi Valley States, Colorado and Utah; Smoke over the Southeastern United States and Cloud capped Boundary Layer in Baltimore
Fires cause raised AOD in western Texas. Moves to ozone-filled Houston for Code Orange.
Moderate levels of ozone in Utah, California, Arizona and Texas
Air quality is wet in the east; unhealthy for sensitive groups in LA
Mexican fires produce dense smoke over Gulf of California; Asian dust moving across the US
Code Orange PM2.5, Moderate Ozone, and High NO2 Levels in Southern
Moderate AQI, High NO2 in Mid-Atlantic; Fires and Smoke in South
Moderate Ozone Concentrations in Arizona, California and Texas; Smoke offshore along Mid-Atlantic States and Mexico
Smoke in North East, Dust from Southwest over Baltimore
Moderate PM2.5, record heat, and Fire Weather Watch over Northeast United States
Blowing dust event over Southwest; Moderate PM2.5 and Ozone AQI across eastern United States
Code Orange AQI along New Mexico/ Texas border; Layers aloft over UMBC
Unhealthy PM2.5 Levels Continue along Florida-Georgia State Line as County Line Wildfires Continue; Layer of Aerosols over UMBC
Code Yellow to Purple PM2.5 AQI Due to County Line Wildfires; Cloud Capped Planetary Boundary Layer over Baltimore
Northern Florida Under Dense Smoke Advisory Due to County Line Wildfires; Smoke over the Central and Northern Plains States
Code Red in Florida again, Smoke along eastern Seaboard
Very Unhealthy PM2.5 AQI in Northern Florida; Brush fires blazing in eastern Long Island
Florida fire continues to burn; Los Angeles Basin has moderate AQI from Ozone
Fires in Florida causing unhealthy air quality
Code orange for ozone in Colorado and Texas; Good levels of PM2.5
Good AQI; Dust over Western US
Fires in Central America; Aerosols over Baltimore/Washington Area
Smoke pours out of Southeast, Aerosol aloft over UMBC
Smoke/Dust and Code Yellow/Orange AQI PM2.5 continue over the Midwest; Layers aloft over Baltimore-Washington
Moderate PM readings through the midwest; good elsewhere
Moderate levels of PM2.5 in the Midwest and Central US
Smoke, Fires, Moderate PM2.5 and AOD Levels in Southeast; COde ORange PM2.5 levels in Southern California
Several fires over the US; Aerosol aloft over Baltimore
Moderate PM2.5 in Central and Southeast US; Fires, smoke and dust
Smoke Plumes in Southern Georgia/Florida causes Code Red, Dust in Plains states
Moderate PM2.5 scattered across US; Unhealthy Ozone near Houston, TX
Ozone season is underway; Fires in KS and MS and haze in TX
Moderate to unhealthy levels of ozone in Texas
Moderate PM2.5, Ozone, AOD and Above Average Temperatures Along the Great Lakes and Mid-Atlantic Regions
Haze along Great Lakes and Northeastern States
Moderate PM2.5 Concentrations Along the Great Lakes and Mississippi Valley States
Smoke and fires in the southeast, raised AOD along eastern U.S.
Unhealthy and Very Unhealthy PM2.5 AQI near El Paso, TX; Moderate for Southeast, Northeast, and Great Lakes
Special Feature (International): Major Dust Storm in Saudi Arabia
Continued moderate air quality moving east; major dust/fire situation in El Paso
Moderate quality in the Midwest and Mid-Atlantic regions
Moderate PM2.5 and AOD Levels in Great Lakes
Good AQI over the US; Fires and Smoke in Southeast
Smoke from Plains States over Mid-Atlantic States; Moderate PM2.5 in Plains States, Georgia and Southern California
Raised AOD across center of the country. Dust in Southwest. Code Orange near Atlanta.
Moderate PM2.5 across the Northeast, Great Lakes and Pacific North/Southwest
Isolated moderate PM in the US, much worse air quality abroad
Moderate levels of ozone observed in Southern California; Good air quality in most of the US
Code Orange PM2.5 Levels, Moderate AOD, and Fires in NorthWest
Fires in Southeast, Sulfate and Dust reported by Monterrey Modeling
Particle Pollution Aloft Over the East Coast; Moderate PM2.5 in the Southeastern States and Code Red Along the Texas/Arizona/Mexico Border
Smoke from Southeast and Great Lakes Regions spreading northeast, Code Red forecast in Arizona
Code Orange and Red over East Texas; Pacific Northwest and Midwest dust observations continue
Generally good air quality across US; potential dust over Texas and Oklahoma
Layer of dust lingers over Baltimore; Good air quality in most of the US
Code Yellow and Smoke from Fires in Arkansas
Good AQI over the US: Trans Pacific Dust reaches the Atlantic
Dust over Central United States; Moderate PM2.5 in Great Lakes and Northeastern United States
Fires in Mississippi Valley, Code Orange in El Paso, TX.
Smoke from Mississippi Valley States over the Maryland, New York and Virginia
Fires affect the air quality in Arkansas; Improved air quality in LA
PM elevated in LA Basin; Large system over the midwest
Good air quality in the US, except for California.
Code Orange PM2.5 Levels in California, Oregon, and Idaho; Mystery Odor and High NO2 levels in Southern California
Dust remnants in Texas and New Mexico; Moderate and good AQI over the US
Blowing Dust and Red Flag Warning over New Mexico and Texas
Fires and Dust Raise AOD in Texas.
Blowing dust over West Texas; Moderate AQI Pacific NW, Great Lakes and Western Texas
Good air quality across the nation, except in Denver, Kansas City and Nipomo, CA
Moderate PM2.5 Levels throughout Country; Smoke in North Dakota and Moderate AOD Levels in South Dakota; Haze in India
Code Orange PM2.5 and High NO2 Levels in North California; Smoke in Indochina
AQI remains unchanged in the US; NO2 and Sulfate
Moderate AQI and fires in the East Coast; Fires and Smoke in Australia
Wildfires Continue in Southeast, causes Code Orange
Code Orange for PM2.5 and Residential Burning Restriction issued in Denver
Except for overnight woodburning the northwest, good air quality across the US
Air quality improves throughout the day; Good AQI forecast for tomorrow.
Code Orange PM2.5 Levels in West, South, and Northeast; High NO2 Levels in Northwest and southern California
Moderate AQI in different States; Fires in South, NO2 in North US
Moderate PM2.5 Concentrations in Pacific Northwest, Mid-Atlantic and Southeastern States
Fires Continue to Burn in South East and Texas, Code Red in Pacific Northwest
Unhealthy PM2.5 in Oregon; Moderate across Great Lakes, Central Plains, & Mid-Atlantic States
Moderate PM2.5 in California and in non-super-bowl region of the midwest
Poor air quality persists in the Pacific Northwestern States; Moderate levels of PM2.5 in the Midwest and Mid-Atlantic
USG PM2.5 Levels and Burn Bans in West
Fires and Smoke in South persist; Moderate AQI in different regions
Moderate PM2.5 Concentrations and Smoke in the Southeastern US; Poor Air Quality in California
Smoke Continues in Southeast, Code Red in California due to PM2.5
Fires proliferate smoky conditions across Southeast States
Dense smoke advisory in Florida not effective; ten dead.
Wildfires and Dense Smoke Advisory in Florida; Red Flag Warning for Alabama and Georgia; Code Yellow to Orange PM2.5 Along the West Coast
Code Orange PM2.5 Levels in California and Oregon
Moderate AQI in the Mid-Atlantic and Lakes regions
Good air quality in the South; Moderate levels of PM2.5 in the Midwest and West Coast
Code Orange PM2.5 Levels in Northern California; Lingering Dust in South
Remnant dust over Louisiana; Moderate levels of PM2.5 scattered across the US
Catching up: Dust Storm Races across Northern Texas
Agriculture fires in south Florida affect AQI; Code Yellow and Orange PM2.5 across Pacific Northwest
Wild/Brush Fires Continue in the Southeast. Code Orange/Yellow in California.
Light Smoke over the Southeastern United States; No improvement in California's Air Quality
Air Quality Action Day in Bakersfield and Fresno, California; Code Yellow to Red PM2.5 Concentrations in California and Oregon
Fires Continue in South East. Raised AOD in Texas. Sulfates in North East.
Widespread fires over Southeast multiply; Air Quality in California Valleys improve
Elevated PM remains in California and fires are widespread in the Southeast
Unhealthy (Code Red) levels of PM2.5 persist in California; Fires in the South
Unhealthy PM2.5 Levels on West Coast; High NO2 Levels in California
Moderate AQI in the west coast; Haze and fog in China
Great Lakes, Mid-Atlantic and Western States Experience Code Yellow and Orange PM2.5 Concentrations
Fires continue to burn through Plains States/Texas causing raised AOD
SPECIAL TOPIC: Beijing Smog cancels and delays flights
Code Red PM2.5 in Central California, Elevated CO near Great Lakes
A few isolated locations with Code Orange AQI levels; some new tools
PM2.5 Code Orange in California, Idaho, North Carolina, Pennsylvania and Vermont
Unhealthy AQI and High NO2 Levels in California
NO2 and Moderate AQI in Mid Atlantic and Florida
Moderate PM2.5 Concentrations in Louisiana; Poor Air Quality in California Continues
Smoke Moving into Gulf Of Mexico, Code Orange/Yellow throughout West Coast
Air quality improves in the East
Poor air quality in Arizona and California
2012 begins with moderate levels of PM2.5 scattered across the US
Haze and Code Red PM2.5 Levels in California
Unhealthy AQI in California persists; Several fires in the US but no smoke
PM2.5 Concentrations in California Continue in the Code Orange and Red Range
Code Red Continues in California, Wildfires span Plains/Texas
Poor Air Quality Continues Across West Coast
EPA AQI is showing Christmassy Colors up and down the West Coast
Fire ban in effect across the Bay Area on Christmas Day
Stagnant Air and Code Red PM2.5 Levels on the West Coast
Dust/Sand over Nevada and California; Moderate AQI in the west coast
PM2.5 Air Quality Index in California Continues to be in the Code Yellow to Orange Range
Continuing Haze over Southern California, Smoke moves through South East U.S.
Haze over California and eastern Utah; Moderate PM2.5 in Mid-Atlantic/Northeast
More of the same in California's central valley; Moderate haze in Utah
High PM2.5 Concentrations Along the West Coast and Wood Burning Ban in the San Joaquin Valley
Code ORange PM2.5 Levels in the west; Good Air Quality Condition for the rest of the Country
Moderate AQI in north-west states; Dust and Fires in West Africa
Poor Air Quality Episode over the West Continues, Moderate PM2.5 reported along the Eastern Coast of the US.
Raised AOD In Pacific Northwest, Modererate/USG AQI Values throughout Eastern US
Code Red AQI continues in California; Scattered Code Orange AQI across Northeast
Persistence. The first rule in forecasting.
Code Yellow and Orange AQI levels continue over Pacific North and Southwest
Bad Air Quality in the West Coast and Fires In Oregon Continues
Moderate AQI and high NO2 levels in the West
Bad air quality in the Pacific Northwest and California continues
Code Reds in Pacific Northwest, San Joaquin Valley continues to have elevated AOD
Moderate to Unhealthy (for sensitive groups) levels of PM2.5 over West Coast
Air quality improved dramatically across the US
Code Yellow PM2.5 levels across much of the United States
Code Yellow PM2.5 Levels in Northwest, Great Lakes, Northeast, South regions; Code Orange Forecasted for Northwest; High NO2 levels in the East
Blowing dust in California due to Santa Ana winds; dense smoke in the Gulf of Mexico
Moderate AQI in west US; Fires and smoke in Louisiana continue
Smoke Pouring into the Gulf, Code Red in Northern California
Code Orange AQI levels over Pacific Northwest; Winter storm affecting Mid-South
Moderate PM2.5 in northern California and Northeastern US.
Dust Storm over Western Texas and Moderate PM2.5 Concentrations Along the Eastern and Western Coasts
Moderate PM2.5 Levels in Early Part of the Day, Good PM2.5 Levels in the Latter Part of the Day
Moderate AQI in some states; Fires but not significant smoke
No Code Orange in the US today
Code Orange and Yellow throughout northern California, Idaho
Special Feature: A new sensor in orbit
Code Yellow PM 2.5 across much of US; Radiation Fog possibly exacerbates PM2.5 in South Carolina
Still quiet air quality day in US today.
Quiet day in air quality today
Code Orange PM2.5 Levels in Southern California Contiues; High NO2 Levels in the Great Lakes Region
Special Feature: Atmospheric gravity waves over the Arabian Sea
Moderate AQI, smoke and NO2 over California
PM2.5 Moderate Concentrations in the Western United States; No Signs of Dust or Smoke in Satellite Imagery
Dust raises AOD over TX/OK, code orange forecasted in Fresno, CA.
Blanket of clouds and storms from Texas to Pennsylvania; Code Orange PM2.5 in Pacific Northwest
Mostly cloudy over US; Nyamuragira erupts in Africa
Good air quality and cloud coverage over most of the US
Code Orange PM2.5 Levels and Fires in Northwest
Unhealthy AQI for sensitive groups in Pacific Northwest; Fires but not visible smoke
Moderate PM2.5 AQI and Elevated NO2 in the Northeast and Western United States
Sulfates Cause Code Orange and Yellow throughout North East
Code Yellow and Orange PM2.5 AQI levels in Pacific Northwest, Great Lakes, and Mid-Atlantic
Elevated PM2.5 in southern Alabama, Idaho, and New Jersey
Moderate PM2.5 continues over Pacific Northwest, Great Lakes, and Southeast; Blowing dust reports in Arizona
Code Orange PM2.5 Levels and wild fires in Oregon and Idaho; Moderate PM2.5 in Mid-Atlantic and Northeast
Special Feature: Impact of forest fires on air quality
More fires throughout the country; Moderate AQI persists in Northeast
Moderate air quality continues in the Northeast and South
Wildfires continue in central US, Code Orange in Southern CA.
Code Orange and Red PM2.5 for Northeast states
Great Lakes and California Experience Moderate PM2.5
Snow storm on the Northeast and Mid-Atlantic; Smoke over the Western United States
Code Orange PM2.5 Levels, Fires, and Smoke on West Coast
Repeated AQI story in US; International/special features
Fires in Southeast region continue
Wildfires Continue in Southeast, Code Red in Southern Arizona
Moderate PM2.5 AQI across Eastern United States; Unhealthy PM2.5 AQI continues in southern California
Light PM through the Great Lakes; Louisiana and the West
Poor air quality in the West Coast and fires in the South continue
Code Red and High NO2 Levels in California; Fires in South
Smoke over Plain States; Fires in Washington; Ozone feature
Wildfire Smoke over Texas and Lousiana, Code Yellow and Orange PM2.5 AQI Along the West Coast
Fires concentrated on North Dakota/Winnipeg border. Smoke in Baltimore from Southeast wildfires.
Good air quality in most of the US; Fires and moderate air quality continue in the South
Fires continue in Louisiana; Hazy in Los Angeles basin
Smoke from Louisiana Cameron parish fire continues to drift northwest; Code Yellow to Code Orange AQI across Eastern Texas
Smoke From Louisiana Fires Stretching into Texas Coast
Good air quality persists; Light aerosol over Mississippi Valley
Good Air Quality Throughout the Nation
Continued Cloud Coverage over the U.S, PM 2.5 settles over Great Lakes region
Clouds cover most of the US; Moderate levels of PM2.5 in Alberta, Canada
Moderate PM levels persist in the Great Lakes States
Moderate air quality persists in the Midwest and Northeast
Moderate PM2.5, Ozone, and NO2 Levels in the Great Lakes; Moderate PM2.5 Levels, Smoke and Fires in South
Moderate AQI in Plain states; Lidar measurements continue detecting aerosols over Baltimore
Smoke from Nevada Wildfires over Baltimore
Fires in Arkansas cause moderate levels of PM2.5, Code orange/yellow continues for Texas.
Texas Chemical fire sends black smoke plumes through the air; More stagnant weather conditions expected for the end of week
Late afternoon moderate ozone again in Texas; Fire in Georgia
Moderate levels of ozone in Texas and PM2.5 Code Orange in Oregon continues
Moderate AQI Levels, fires, and smoke in Northwest and Southeast; Code Orange Ozone levels in Texas and California
Moderate AQI throughout the Country; Dust storm in the Middle East
Code Orange Ozone Concentrations in California and Texas; Remnant Smoke over the Western United States
Low Pressure system continues to sit above Great Lakes states, code orange throughout Dallas, TX
Smoke over Rocky Mountain and Plains States; Powerful cyclone dominates weather pattern across the United States
Southern California suffering with PM haze; Fires continue in Wyoming
Moderate and Unhealthy for Sensitive Groups AQI across Pacific Northwest/Southwest and Southern Plains states
Code Orange AQI Levels, Moderate Tropospheric NO2 Levels, and High Temperatures in California and Texas
Unknown Aerosol over Texas/Mississippi region
Code Orange and Yellow Ozone AQIs in California and Texas; Wildfires Remnant Smoke over Western United States
Code Orange and Yellow throughout Texas and California.
Moderate to unhealthy levels of ozone continues in California while most of the US continues to enjoy good air quality
As we move into fall, air quality events quiet down over the US
Moderate AQI in South states; Fires in Mississippi Valley
Smoke and Moderate AQI Levels Continue in the Southeast
Fires and Smoke over Southeast; Moderate AQI in eastern US
Pacific Northwest Fires Continue to Impact Air Quality from Coast to Coast with Code Orange and Yellow PM2.5 Concentrations
Ozone causes Code Purple in California, Milwaukee gets code red from smoke.
Pacific Northwest and Rocky Mountain States' wildfires continue to impact air quality
A river of smoke crosses Canada and the northern US
High AOD and moderate AQI continues in the Northwest and Eastern Canada
Code Red surrounding Houston, fires continue in the Pacific Northwest.
More smoke and wildfires over several areas of the US
Wildfires in the Pacific Northwest and Texas Continue to Impact Air Quality
Code Red near Eugene Oregon, Pacific West covered in smoke, fires continue in southern Texas
Pacific northwest states continue to emit dense smoke; Remnants of Tropical Storm Lee help to clean air for Mid-Atlantic states
Smoke, Moderate to USG AQI and AOD levels in the Mid-Atlantic, Texas, and Pacific Northwest Regions
Elevated AOD and moderate air quality continues in the Midwest and East Coast.
Smoke, High AOD, and Unhealthy AQI Levels in the Plains States, Great Lakes, and East Coast
Smoke over Central US, Moderate AQI
Dust and Smoke Impact Air Quality in Arizona, Oregon, Mississippi Valley and Southern Great Lakes States; Homogeneous Boundary Layer in Baltimore
Code Red for L.A., Smoke becomes concern in Baton Rouge, Pacific Northwest continues to have wildfires.
Code Yellow and Orange AQI across Southeast, Southern Plains, Pacific Southwest, and Pacific Northwest states; Large marsh fire reported near New Orleans
Too much water pollution in the East; ozone levels elevated in the South
Smoke Continues to Cover Much of the Country as Unhealthy Ozone and AOD Levels Continue in the South and Southern Plains States
Smoke spreads over the US; Unhealthy levels of ozone in South
Smoke from Rocky Mountain Fires Yields High AOD and Arrives to Baltimore
Rocky Mountain States Enduring Large Smoke
SPECIAL FEATURE: First Hurricane of 2011 Atlantic season marches towards the United States
Rocky Mountain States' fires continue to send smoke plumes eastward; Elevated AOD across Plain States
PM2.5 reaches Unhealthy levels in Washington State; Ozone levels improve in the East
Ozone hits Unhealthy for Sensitive Groups Across the East
Elevated AQI and AOD Levels In the East Coast, Plains States, and California
Various smoke plumes still evident across US; small-scale airmass boundaries possibly intensify ozone concentrations
Smoke from Forest Fires Across the Nation Continue to Impact AOD Retrievals
Southern Idaho and Great Dismal Swamp Fires Continue to Burn
Possible thunderstorm ignites wildfires in Idaho; Great Dismal Swamp fire's smoke plumes continue
Ontario and Virginia Fires will continue to burn.
Smoke from Virginia fires reaches Maryland; Moderate air quality in the East, Poor conditions in California
Moderate PM2.5 Levels in Southeast; Moderate to USG AQI Levels in California
Good Air Quality in the US; Aerosols in Mid-Atlantic coast
Plume of smoke from swamp fire in Virginia threatens air quality over the Mid-Atlantic States; Code Green to Code Yellow AQI for most of the U.S.
Code Orange Ozone Levels, Fires, and Smoke in Oklahoma;
Multiple thin layers of smoke across southern tier of United States; Critical Fire Weather in Oklahoma
Special Feature: Drought in the Horn of Africa
Haze under and between clouds from IL to NY; Dust Approaching Southeast
Ozone levels improve in the Central Plains; Clouds cover the East
Smoke and Moderate AQI Levels in South
Smoke over the Great Lakes; Moderate AQI
Smoke from Canada continues to drift into the United States; hot and dry weather fuels poor air quality in the Plain States
Smoke Coming From Canada raises AOD in North East U.S.
Smoke observed across the Great Lakes Region; Moderate to Unhealthy for Sensitive Groups AQI over Great Lakes, Mid-Atlantic, Southeast & Pacific Southwest
Fires continue in Canada, midwest PM is slightly elevated, smoke in southeast
High AOD persists over the Atlantic; Moderate air quality in the East
Code Orange AQI and Moderate AOD Levels on the East and West Coasts
Ozone, PM2.5 and unknown aerosol in Eastern US; Fires and smoke in the West
Light to moderate smoke over Mississippi Valley, Plain States, and Pacific Southwest; Cooler & cleaner airmass filters into Mid-Atlantic
SPECIAL TOPIC: LIDAR ON THE CHESAPEAKE
Smoke Plumes Moving through Great Lakes States. Canadian Fires also continue.
Good to moderate AQI across much of the United States today; hint for more heat by Thursday
Relief in site for the East Coast as haze and heat moves out; moves in in Texas
High AOD, high temperatures and moderate to unhealthy levels of ozone over Mid-Atlantic and Northeast
High Temperatures and Moderate to Unhealthy Air Quality Levels Along the East Coast
Poor Air Quality in the Eastern US Continues
Poor air quality and rising temperatures begin to plague the eastern US; Canadian wildfire plumes threaten to make it worse
Canadian Fires dump smoke onto the North East, Arizona dust still flying
Heat headlines expected to continue throughout the week, contributing to poor air quality conditions across Mid-Atlantic and Northeast states
Smoke crossing Ontario and Quebec
Good air quality in MD but code orange for ozone is expected on Monday
Moderate PM2.5 and Ozone Levels and Smoke over the Plains States
Good air quality day over the US
SPECIAL FEATURE: Azure skies bring a breath of fresh air across the Mid-Atlantic and a smooth cruise for today's NASA DISCOVER-AQ flight
Smoke over the Southeastern US; Cloud Capped Boundary Layer over Baltimore
Code Yellow and Orange throughout the East Coast and Central United States, Fires in the Mississippi Valley causing high AOD values.
Climbing Ozone AQI across Mid-Atlantic; "Derecho" type wind event races through Great Lakes Region
Broad band of moderate AQI through the Great Lakes States
Poor air quality is expected in Maryland tomorrow; PM2.5 code red in Nevada and smoke over Central US
Smoke, High AOD, and Elevated AQI Levels over South Carolina and Georgia; Code Red Ozone Levels in Southern California
High Ozone and PM2.5 levels in Eastern US; Fires and smoke over Canada
Moderate and Unhealthy for Sensitive Groups AQI across Great Lakes & Mid-Atlantic regions; Historic haboob in Arizona
Ozone parked in the Sacramento Valley, Smoke continues to spread throughout the Carolinas.
Dense plume of smoke covering Southern Plains, Mississippi Valley, and Southeast states; How will federal holiday affect US air quality ?
Frontal system clears haze out of mid-Atlantic; Dusty in Las Vegas; Ozone in Riverside
High AOD along the Southeastern / Mid-Atlantic Coast; Rising ozone levels in Maryland
Code Orange Ozone Levels in Great Lakes, Mississippi Valley, Southeast, Mid-Atlantic and Southern California Regions; Code Orange PM2.5 Levels, Smoke, High AOD in the Carolinas
SPECIAL FEATURE: Mission Accomplished; first DISCOVER-AQ flight a success
Central US coverd with smoke from fires in NM; Ozone in east US
Special Report: Keep your eye on the sky; DISCOVER-AQ test flight sweeps over Maryland
Smoke from New Mexico Fires Spreads to Southern Plains and Mississippi Valley States; Homogeneous Boundary Layer and Good Air Quality in Baltimore
Concentrated fires in Plains states, causing code orange in Oklahoma
Fires in New Mexico continue, sending swath of smoke across central US
Smoke in upper great lakes and the Carolinas
Special Feature: DISCOVER will tell us more about air quality measured from satellites
Fires in Northern Canada and Ontario continue; Moderate to Unhealthy levels (for sensitive groups) of PM2.5 in Minnesota and Wisconsin
Air quality Improves in North Carolina and Georgia; Code Orange Ozone Levels in Texas, Oklahoma, Colorado, and California
Wildfires in Canada, Georgia and North Carolina
Fires continue to burn in Georgia, Smoke Heads towards already smoky North Carolina
Smoke from Wildfires Continue to Impact Eastern United States Air Quality
Powerful weather systems over Central US and Canada modify smoke plume progression
Smoke Coming From Canada leaves D.C./Baltimore with Code Orange/Yellow Levels
Moderate ozone levels in Southern California, Great Lakes and Northeast; Smoke still causing elevated AOD in the Southeast
Smoke, High AOD Levels, and Unhealthy AQI Levels in Florida, Gerogia, and South Carolina
Moderately dense smoke plumes from fires in Arizona and Florida; Good and Moderate AQI over the US
Canadian Smoke over Baltimore; Arizona and Okefenokee Wildfires Smoke over Mississippi Valley and Southeastern States
Heavy/Moderate Smoke in one of Arizona's Largest Fires
Clean and cooler air moves towards the East Coast, but poor air quality continues for the Mississippi Valley and Southeast states
Relief appears to be in sight for the poor air quality this week
Poor air quality continues in Southwest, South, Midwest and Mid-Atlantic states
Wildfires in Arizona Continue
Fires continue; Large amounts of Smoke over the US; Unhealthy Ozone Levels in East Coast
Unhealthy Air Affecting the Eastern United States
Power Difficulties at UMBC
Uncontained Fires in Arizona continue
We're baaaaaack! Fires across the US and a bad one at UMBC
Smoke, and Code Yellow and Orange PM2.5 AQI in the Eastern United States; Lidar Captures Smoke Aloft over Baltimore
Record Temperatures and Code Orange Advisory for Air Quality in North Eastern Coast
Fires in Alberta & Arizona, Moderate PM 2.5 in Baltimore
Hang on to your hats, Air Quality in Maryland is going down fast.
Elevated to high AOD and code red AQI in Western Canada due to smoke
Smoke, Haze, Moderate AOD, and Code Yellow PM2.5 Levels in Texas and East Coast
Smoke over a huge portion of Canada; Smoke/haze in Mid Atlantic
Fires in Canada continue; Elevated AOD over the Mid-Atlantic States
South East covered in smoke, Texas also reporting USG levels.
HMS Smoke over texas forecasted to head north
U.S. Air Quality dominated by smoke from Mexico
Special Feature: Grimsvotn Volcano Erupts in Iceland
Smoke from Mexico and Central American Agricultural Fires and Moderate PM2.5 over Eastern Half of United States; Canadian Wildfire Smoke over the West Coast
Code Orange PM Levels in Southern Texas due to Smoke from fires in Mexico and Central America; Code Yellow PM Levels in Alberta due to Wildfires
Hundreds of fires in Canada, Gulf of Mexico and Texas
Fires in Mexico continues; Clouds covering most of the US
Moderate to USG Air Quality in Texas, smoke coming from fires throughout the Mississippi Valley
Significant amounts of smoke in North-Central Canada
Burning season heats up; Saying Goodbye to Rapidfire
Air Pollution Advisory Issued for Northeastern North Carolina; Moderate PM2.5 AQI in the Great Lakes and Southeastern States
Code Orange PM2.5 Levels Forecasted for Costal Areas of North Carolina and Virgina Due to Smoke; Code Orange Ozone Levels in Southern California
Moderate Ozone and PM2.5 Levels; Smoke Aloft in Baltimore
Moderate to Unhealthy levels (for sensitive groups) of PM2.5 across most of the Eastern US
Light and Moderate Smoke continues to come from Florida.
Moderate AQI in most of the Country; Remnant smoke from several fires
Honey Prairie Fire continues to burn 44,000 acres
Moderate Ozone AQI Reported in Southern Half of the United States; Remnant Smoke from Southeastern Wildfires Captured by AQUA
High Ozone levels in California; Moderate Ozone and AOD levels over Texas
Smoke Over Florida headed toward Atlantic Ocean
Asian Dust in South Korea: the worst so far
Moderate to light smoke coming from Florida. Texas continues to have fires.
Higher levels of AOD scattered across southeast US
Texas continues to bear the brunt of regional fires
Smoke over Gulf of Mexico and Plain States; Dust in the Southwest United States
Smoke and Haze in Texas
Good AQI over the country; Remnant smoke in South
Fires and dust in Mexico and Texas; Moderate ozone levels in Southern California and Southern Texas
Unhealthy Air Forecast for Albuquerque, NM. Fires Continue in Texas
Fires in Northern Mexico & Southeast New Mexico bring smoke to Texas
Smoke continues to be imported into Texas
Agricultural Fires from Mexico and Central America Continue to Impact Air Quality in Texas
Moderate Air Quality Continues in Texas as a Result of Smoke from Fires in Central America, Mexico, and within Texas
Fires continue in Central America; Hazardous Fire Conditions in Texas
Fires continue and smoke travels northward
Fires, Smoke, and Moderate PM2.5 in Southern States
Smoke and Fire keywords today in many parts of the country
Smoke continues in the Lower Mississippi Valley; Ozone in LA Basin
South Korea air quality follow-up
Smoke causing code orange in Texas
Fires Burn throughout Texas, smoke covers southern US.
Several fires and smoke in South US and Central America
Smoke Across the Plain States and Moderate PM2.5 AQI in Southern Plains States and the Mississippi Valley
Fires Burn throughout Plains states, concentrated in Kansas.
Today's PM 2.5 & Ozone Moderate in Texas
Southern Smoke over Baltimore
Busy Air Quality Day in the US with widespread smoke
International Feature: Air quality in South Korea
Fires, Smoke, Moderate PM2.5 and AOD Levels in Texas
International feature: Saharan Dust off Portugal
Smoke from agricultural fires continue taking place in South
Smoke from Mexican Fires Led to Moderate AQI over Texas and Oklahoma
Texas/Midwest continues to be covered in smoke.
Fires continue in Northern Mexico, smoke over Southern Texas
Lower plains and Rocky Mountain states still affected by smoke
PM2.5 Code Orange observed in Louisiana, Oklahoma and Kansas
Fires and Smoke from Mexico Possibly causing Code Yellow AQI Levels in Texas and Southeast US Coast
International Feature: Arabian Sand Storm
Smoke in Gulf of Texas; NO2 in the Great Lakes; Sulfate in North-East
Light smoke over the Gulf of Mexico; Moderate Ozone and PM2.5 AQI in the Southwest and Midwestern States
Fires continue to burn in the Great Lakes and Mid-Atlantic, smoke rising towards South East
Smoke in Southern Louisiana, Mexico/Texas border
March 18th - 24th Air Quality in retrospect
PM2.5 readings are good in the US; Smoke approaching from the south
Fires continue in Oklahoma and Southern States
Smoke from Agricultural and Wildfires affecting PM2.5 Levels in South
Smog Blog is back
URGENT Announcement.
Remnants of smoke from large fires still visible in south
Smoke over Southeast and Great Lakes states.
Wildfires Continue in Southeast
Moderate PM 2.5 in Southeast U.S., Higher AOD same region
International: Poor air quality adding to Japan's misery
Fires in Oklahoma die down but not before burning 14 houses
Fires in Oklahoma and Arkansas continue and smoke gets transported to the East
Coastline change around Sendai and Fukushima
Fires and Smoke in Plains States; Blowing Dust and Sand In Nipoma California Causing Code Orange AQI levels
Good air quality in the US; Fires in the plain states
Poor air quality in Alberta, Canada
Recent Kilauea Eruption continues to release Sulfur-Dioxide
Unhealthy levels of PM 2.5 for El Paso, TX
Clouds found nearly everywhere
Utah / Wyoming high ozone levels outlook
Moderate PM2.5 Levels in Plains States and Mississippi Valley Regions; High NO2 Concentrations in Northeast and California
Several Fires and smoke plumes detected in South-east region
Remnant Smoke and Moderate AQI Concentrations Along the Gulf of Mexico
Thick layer moves from central Canada, settles above Baltimore.
High levels of SO2 over Hawaii, Moderate PM 2.5 in Northeast, Central Plains & California
International: Dusty day in Arabia
Big dust storm in El Paso area seen from Space
Widespread agricultural burning continues in Southeast
Dust from Libya and Egypt Blowing Eastward
Smoke and Fires in South; Good Air Quality Across Country; Air Quality Action Day Tomorrow in Arizona
Saharan dust over the eastern Mediterranean Sea
Several fires continue in Southeast
Coarse Smoke Particles Over Southeastern US and Moderate PM2.5 AQI Across the Nation
Fires still continue to roar across the country
High OMI NO2 conentrations over mid-atlantic region
Smoke continues to pour from Georgia southeastward
Fires continues to affect air quality in the South
Moderate PM2.5 Levels, Smoke and Fires in South; Code Orange PM2.5 Levels and High Troposheric NO2 in Northeast
AQI activity in East US; Fires in Southeast
Warm Airmass in Southeast and Mid-Atlantic States = Moderate Particle Pollution; Code Orange PM10 AQI in Boise, Idaho
Update: Aerosols Loft over Baltimore
High ozone AQI in northeastern Utah; aerosol layer over Baltimore
Moderate PM 2.5 in California, Low levels AOD
Fires in the US South, haze in the northern San Joaquin Valley
Lots of red and green in today's imagery
High NO2 and Moderate PM2.5 Levels throughout Northeast and West Coast; Fires and Smoke in South and Plains States
Fires in California; NO2 over Northeast
High NO2 Concentrations over Eastern Half of the United States and Moderate PM2.5 in the West Coast
Good to moderate AQI in California, Pennsylvania, Northeast, Montana and Alberta, Canada
Moderate levels of PM 2.5 in Northeast and Central California
Low Aerosol Optical Depth across the country
PM levels are moderately elevated across wide areas of the US
Code Red PM2.5 Levels in Oregon; Code Orange Levels and High Tropospheric NO2 in West and Northeast
Unhealthy AQI in Oregon; Smoke and Dust in Southwest
PM2.5 Moderate AQI and High Tropospheric NO2 in the Pacific Coast; Japanese Volcanic Ash Captured by MODIS; EPA strenghtened NO2 NAAQS
Code orange in California, Washington, South Carolina and Georgia
Moderate PM 2.5 in Carolinas, Oklahoma
Something's happening here, what it is ain't exactly clear.....
Yawn - pretty unexciting picture from the US today
Moderate to Unhealthy for Sensitive Groups Air quality Conditions in Northeast and Great Lakes; Numerous Fires and Smoke in South
AQI improves in Mid-Atlantic; Smoke plumes in Texas
Unhealthy PM2.5 levels in Mid-Atlantic Region; Mesospheric Clouds
Code orange in Midwest, Mid-Atlantic and Pacific Northwest
MOderate levels PM 2.5 in Central U.S. & California
Code Orange PM2.5 Levels in California and Connecticut; Fires and Smoke in South
California improves but still fog in the south San Joaquin Valley
Moderate to Unhealthy Air Quality (Code Orange) in California
What drives the PM2.5 formation during the winter?; Moderate PM2.5 AQI Observed Throughout US
Air Quality Improves in the Pacific Northwest; PM2.5 AQI No Greater than Moderate Along the US
Poor air quality in the West and Midwest continues
Much of Eastern U.S. covered in clouds, Moderate levels of PM 2.5 in California
Wintertime shallow boundary layers continue to dominate the problem areas
Inversions in CA and UT create degraded air quality
Code Orange PM2.5 Levels in Utah, Oregon, California, Idaho, and Missouri; Fires in South
Good air quality; Fires in Louisiana
High NO2 Concentrations over Rocky Mountain States; PM2.5 and NO2 Air Quality Action Day in Denver, CO; Snow reported in 49 of 50 States.
US covered by clouds; Air quality continues between moderate and unhealthy in the West
Moderate Levels PM 2.5 Midwest, California
Much improved air quality today; PSC in Greenland
Poor air quality continues in Utah and Oregon; Fires throughout the south
Unhealthy Air Quality Conditions Continue for Oregon, Washington, Idaho, and Utah
Unhealthy PM2.5 levels in Oregon; Sulfate and NO2 in North-East
Air Stagnation Advisory for Northeast Oregon and Southwest Washington
Poor air quality in the Pacific Northwest; Action Day in Utah tomorrow
moderate to USG levels of PM 2.5 in Pacific Northwest United States
No fireworks today, unless it is in the NFL at Pittsburgh.
Fireworks dominate US Air Quality Today
Code Orange PM2.5 Levels Continue in Northeast; Code Red Air Quality Action Day Extended for Phoenix, Arizona; Fires and Smoke in Florida and Georgia
Moderate and USG levels of PM 2.5 in Northeast
Code Orange/Yellow in Great Lakes States and Smoke over Eastern Florida
Code orange in Missouri; Watch for Particle Pollution in Wisconsin tomorrow
Good air quality over the US; Small fires in South-East
75% of the US under cloud cover; Haze in Montana and Alberta
Trouble in the Southwest and trouble brewing up a storm in the Gulf
A Snapshot of Particles in the Air
Fires continue in South-East
Fires and Smoke in South
Stagnant Air Advisory for Montana
Unhealthy air quality in Montana and California
Moderate levels PM 2.5 through central U.S.
Elevated PM levels in the Mid-Atlantic and St. Laurent Corridor
Cloudy and snow covered over most of the US
MOderate PM2.5 Levels In Northeast, Mid-Atlantic, Great Lakes, and West Coast Regions; Smoke and Fires Continue in Florida
Good Air Quality over the US
Moderate PM2.5 in Plains and Southwestern States; Smoke off the Florida Panhandle
Moderate to Unhealthy levels of PM2.5 in the West
Smoke in Louisiana, Moderate levels of PM 2.5 in California
Sulfate in Northeast; Smoke in South
Moderate PM2.5 concentrations along United States; PM 2.5 Health Watch in Arizona Continues
Code Orange PM2.5 Levels in California; Fires in South
Good Ozone levels; Moderate PM2.5; NO2 over the US
PM10 Health Watch in Arizona, and Smoke over Lousiana and Arkansas
International Feature: Unhealthy air quality and thick smog shuts Tehran down
Fire in Baltimore, Smoke in Louisiana
Weather help is on the way for the Central Valley of CA; Utah stays poor
The winter air pollution problem in the San Joaquin Valley begins
Unhealthy levels for sensitive groups in California; Good Ozone levels
Good AQI; Sulfate and NO2 in th US
Code Orange PM2.5 levels in California; Spare the Air Alert in San Francisco Bay Area, and Smoke in Texas and Lousiana
Unhealthy levels of PM2.5 in Fresno, California and Unhealthy for Sensitive Groups (USG) in eastern Oregon
USG and Unhealthy levels of PM 2.5 Central California
Slightly elevated haze in Illinois and Ohio; Code Orange in Logan Utah
Longing for that green, green grass of summer.....
Good Air Quality Throughout Much of the Country; Moderate to USG PM2.5 Levels on West Coast;
Continued Elevated PM2.5 Levels on West Coast; Smoke and Moderate PM2.5 Levels in Georgia
Code Yellow PM2.5 Concentrations in Western United States. Burn Advisory Issued for Butte County, California.
Moderate to Unhealthy (USG) air quality in the West Coast, and Northeast/Mid-Atlantic regions
Fire in Southern Georgia Continues
A Lesson in Dispersion and Photochemistry
Fair to middlin' air quality across the nation
Fires and Code Orange PM2.5 Levels in Georgia and Florida; Continuing Bad Air Quality in California
Fires in Texas and Georgia; Dust storms in Alaska
Haze/Smoke over California and Gulf of Mexico
Special: California air quality improvement over the last 40 years
Fires In Georgia, USG levels of PM 2.5 Central California
Front is pushing some haze ahead of it in the East; SJV worsens
A Gorgeous Fall Day in the East
Code Yellow PM2.5 Air Quality Continues in Great Lakes and Mississippi Valley
Fires/Smoke and high NO2 concentrations over Great Lakes region
International: Mount Merapi Emerges
Moderate PM2.5 AQI in the Great Lakes and Mississippi Valley States
Moderate to unhealthy air quality in the Midwest, South and Pacific Northwest
Moderate Levels of PM 2.5 in Upper Midwest, Fires & Smoke in Louisiana
Moderate Air Quality early in the Northwest and Moderate PM2.5 in Illinois
Good air quality; Sulfate over Mid Atlantic; Indonesia volcano's feature
Elevated PM2.5 Levels in the West; Smoke and Fires Along Gulf Coast
Good air quality over the Country; Fires in Northwest
Moderate PM2.5 over Great Lakes, Mississippi Valley, Pennsylvania and California. Smoke over Oregon.
Good to moderate air quality in the Midwest, Southeast and California
Moderate Levels of PM 2.5 in Southeast United States
US PM, AOD, and Ozone are all green today, but watch out!
Another fine day with good air quality
Good Air Quality Continues for the U.S; Fires in Mississippi Valley
Good air quality over the Country
Good Air Quality Across US; Fires and Smoke on West Coast
International News: Volcano erupts after earthquake and tsunami hit Indonesia
Moderate PM 2.5 in Northeast, U.S. Cloud Cover
Clouds mostly everywhere
Some elevated PM Levels in Midwest; Haze moving into Maryland from Where?
Fires and Moderate PM2.5 Levels in Northwest and South
Good and Moderate air quality; Fires continue; High AOD levels
International: Smoke and haze in Malaysia and Indonesia
Smoke and Moderate PM2.5 over the Northern Great Basin
Haze over Plains States, South, California and part of Mid-Atlantic
Moderate levels of PM 2.5 & Ozone in Southeast U.S., smoke in eastern Arkansas
Generally very good air quality across the US
Unhealthy for Sensitive Groups in Los Angeles and San Joaquin Valley
Code Red PM2.5 Levels in California; Fires and Smoke in Southern half of U.S.
Good and Moderate air quality; More fires and light smoke
Smoke/Haze over the Southeastern States and Code Orange Ozone AQI in California
Haze over Midwest and Mid-Atlantic with moderate levels of PM2.5 and ozone.
Moderate levels of Ozone & PM 2.5 in eastern United States
Burning in the Lower Mississippi Valley continues and Smoke makes it to Maryland
Smoke from the Great Lakes down the Mississippi to the Gulf of Mexico
Air Quality Action Day in Texas and Louisiana; Smoke over the Great Plains
Fires continue; Moderate air quality levels in fires regions
Numerous Smoke Plumes and Fires Across the Country
Smoke over the Plain States (OK, AR and ND); Relatively good air quality in California
Overall Good Ozone/PM 2.5 levels, Fire in Louisiana
Relatively good air quality in the US despite the ongoing fires in Southeast and Northwest
Fires continue in the Northwest and Southeast
Fires in Smoke in Northwest, Central, and Mississippi Valley Regions
Moderate and Unhealthy Air Quality in California; Fires Continue in Utah
Air Quality Action Day in California; Twitchell Canyon Fire Still Burning
Code Orange Ozone in California; Good Air Quality Elsewhere in the U.S.
Good levels of Ozone & Pm 2.5, Fires in Utah
Good air quality across US except for California
Air Quality Improves in Mid-Atlantic; Code Orange/Red AQI in California
Haze, Elevated AOD and AQI levels in Mid-Atlantic; Fires and high AQI levels in California
Fires continue in Mississippi Valley, Oregon and Idaho
Haze/Smoke over Mississippi Valley, Southeast and Mid-Atlantic States
Persistent Smoke/Haze in Great Lakes and Mississippi Valley; Twitchell Canyon and Sheep Wildfires Continue to Burn
Fires in Utah and Alaska producing smoke
Sheep fire in California continues; Hurricane Igor reaches Bermuda
Haze and moderate levels of PM2.5 in the Mississippi Valley and Southeast
Code Red PM2.5 Levels from Continuing California Fires
Good Air Quality over the US; Ozone Hole News
Smoke of Utah's Fishlake National Forest Wildfire over Midwest States; Moderate AQI in the Southeast and Mississippi Valley States
Fire and Smoke in California and Utah; Code Orange Ozone in Louisiana
Moderate levels PM 2.5 in southeastern Pennsylvania, Fires in Arizona
Good air quality across most of the US
Very quiet air quality day in the US
Code Orange Air Quality In South; Fires and Smoke along Mississippi
Good Air Quality over the US; Agricultural fires in Canada
Four Mile Canyon Fire Continue; Good AQI Throughout the United States
Four Mile Canyon Fire Continues in Colorado
Fire in Colorado
PM2.5 Code Red in California; Blowing dust observed in Idaho
Dust in the US Southeast and offshore; Elevated PM and O3 in the Southwest
International: Trying to see Mount Sinabung eruption
Code Yellow PM25 and Ozone along Eastern US; Earl Downgraded to Tropical Storm
Sulfate over Mid-Atlantic; Smoke into the stratosphere
Code Orange Ozone AQI East of the Great Lakes and Mississippi Valley States; Code Red Ozone and Haze in Metropolitan Baltimore-Washington Area; Hurricane Earl Continues Path Towards United States
Code Orange Ozone in Mid-Atlantic; Poor Air Quality in East Expected to Continue on Wednesday; Keeping an Eye on Hurricane Earl
USG levels of Ozone in Mid-Atlantic United States
SPECIAL FEATURE (Brazil): State of alert is declared due to very low relative humidity in some cities and the fires continue
Smoke over the Great Lakes; Ozone levels improve except in the Great Lakes and Mid-Atlantic
Haze from Texas and Arkansas moves northeastward;Fires in the Northwest
Fires and Smoke in Idaho and along Mississppi River; Haze In the South; Code Orange Ozone in southern Plains States
Wildfires continue in Oregon; Fires in South America
Code Orange/Red Ozone in Central/Southern California; Haze over Texas and Mississippi Valley States; Fires in Oregon Continue
Code Orange Ozone in Central/Southern California; Haze in Southeast and Mississippi Valley; Fires in Oregon
Smoke in southwest Oregon, Ozone levels moderate in Texas, Hurricane Danielle forms
Unhealthy levels of PM2.5 persists in Alberta
SPECIAL FEATURE: Water not air is the problem in Pakistan
British Columbia Fires continue to pour smoke; Moderate AQ in mid-Atlantic
Smoke from Canadian Fires over Baltimore and Code Yellow/Orange Ozone AQI Levels
Unhealthy Ozone levels in Mid Atlantic; Smoke continues entering to the US
Code Orange Ozone levels in Connecticut, Ohio, Texas, and California; Smoke and high AOD continues in Northern U.S from British Columbia fires
Good-to-Moderate Air Quality Continues; Smoke from BC Wildfires Reaches Northern U.S.
Low levels of PM2.5 & Ozone, Haze/Smoke in British Columbia
Saturday's haze is not moving; BC Interior Fires continue
Anthropogenic haze in the Lower Mississippi Valley; Smoke in British Columbia
Code Orange Ozone levels in Great Lakes and Mississippi Valley; Continuing Haze in the South;
Improvement in air quality in Mid Atlantic; Some new fires in the US
Bad Air Quality in Mid-Atlantic
Code Orange Air Quality Across the Eastern U.S.
USG levels of Ozone in North East, Midwest U.S., Fires in central Canada
Smoke reaches the East Coast of the US
Smoke blankets much of North America
Code Orange PM2.5 and High AOD from Smoke in Northwest;
Moderate PM2.5 and Ozone; High AOD values due to Smoke; Wildfires in Rusia
Code Yellow and Orange PM2.5 AQI in the Pacific Northwest and Eastern US; High AOD Levels due to Haze and Smoke
SPECIAL FEATURE: Not all smoke originates in Canada
Thick Smoke from Fires in northern Pacific Northwest and Rocky Mountains States; Scattered Code Orange Ozone and PM2.5 in Great Lakes, Mississippi Valley, Texas, Colorado, and California
Moderate to USG Ozone levels in Ohio
Moderate levels of PM2.5 continues in the Great Lakes, South and Mid-Atlantic;
Unhealthy ozone levels remains in California and so does smoke over Canada
Code Orange Ozone Levels in California; Mojave Desert Wildfires Continue
Smoke from the fires in Canada continues to cover large parts of Canada.
Code Yellow and Orange Ozone AQI Levels over the Mid-Atlantic and Northeastern States; Wildfire smoke over North Dakota and California from Canadian and Mojave Desert Wildfires.
Code Orange Ozone in Southern California; Code Yellow O3 and PM2.5 across Great Lakes and Mid-Atlantic Regions
Smoke From Saskatchewan Fires Comes To U.S.
Moderate levels of PM2.5 from Texas to New Jersey; Unhealthy ozone levels in California
Smoke continues to pour south from Canada; hot in East
Code Orange Ozone Levels in Mid-Atlantic; Moderate AOD on East Coast
Fires continue in Canada and good to moderate AQI in US
Moderate PM2.5 in Eastern US States, Code Yellow and Orange Ozone AQI Levels Along Interstate 95 ; Canadian Fires Still Burning
Code Orange Ozone in California; Saharan Dust off of Florida Coast; Fires Continue in Canada
Smoke Over Central Canada, PM 2.5 Moderate in North East U.S., California
Good to Moderate AQI in the Great Lakes, Mid-Atlantic, Northeast, Plain States and Southern California
Code Orange Air Quality in Baltimore
Code Red Ozone and High AOD Levels in Southern California
Good Air Quality throughout US; Fires continue to produce Smoke in Canada; High AOD values across the Eastern US and Central Canada
Code Yellow and Orange Ozone AQI levels over the Ohio River Valley; Saskatchewan Fires Still Burning and Sahara Dust over the Atlantic
Code Orange Ozone in Southern California; Code Yellow PM2.5 in South and East; Fires Continue in Canada
Ozone Levels Moderate in North East, Fires Continue in Washington State
Smoke from Canada reaches Pennsylvania; Elevated tropospheric NO2 in eastern US
Bortas campaign is underway and smoke is delivered on schedule
Haze, High AOD and Bad Air Quality in Southeast
Poor Air quality continues in the East; Aerosols over Mid Atlantic
Poor Air Quality Persists in the East
Poor Ozone and PM2.5 Air Quality Continues in the East
Elevated levels of Ozone & PM 2.5 in Northeast
Special Feature: Dry Season in Brazil
Code orange for ozone and PM2.5 in the East
Ozone season heats up in the Southwest; smoke from Canada adds to Midwest Haze
Code Orange Ozone Levels in Missouri and southern California; Low to Moderate AOD Across U.S
Good air quality over the US; Fires and smoke continue in Canada
Improvement in Air Quality over the US; Ozone Action Air Alert in Colorado; Canada and Alaska Wildfire Smoke over Baltimore
Big Improvement in National Air Quality
Moderate PM2.5 Southern New England, Fires Arizona, Mississippi River
Air Quality Improves in East; Code Orange Ozone in Southern California
Canadian Fires dominate East Coast Air Quality
Smoke from Canadian Fires Extends into Great Lakes and Northeastern Regions of U.S; Unhealthy Air Quaiity in Michigan and southern California; Moderatly High AOD on Southeastern Coast
Unhealthy Ozone levels in South California: Dense smoke plume due to fires in Canada
Code Yellow PM2.5 Continues in Eastern U.S. due to Haze; Code Orange Ozone in Parts of the Mid-Atlantic and Southern California
Arizona Wildfires, Ozone Air Quality Action Day and Low Level Jet over Baltimore
Fires in Central South, Moderate levels of PM2.5/Ozone
Moderate levels of PM2.5 dominates the eastern half of US; Smoke from Canadian fires still causing elevated AOD
Heating up in the east and smoke and haze are widespread on the East Coast
Code Orange Air Quality in Southern California; High AOD and Smoke in Kansas
Good Air Quality in the US; Fires continue in Canada
Blowing Dust Advisory and Ozone Air Quality Action Day in Colorado; Haze and Moderate PM2.5 in Southeastern US
Moderate PM2.5 Air Quality Continues across the Southeast, Mississippi Valley, and Great Lakes due to Haze
Moderate Levels of PM2.5 in eastern U.S., Fires in Arizona/New Mexico
Haze persists over the Southeast and Mississippi Valley; Canada fires update
Moderate haze in the US Southeast
International: Shanghai Expo and Air Quality
Code Orange AOD in Mid-Atlantic;
Fires in Alaska in Canada continue; Good air quality in the US.
Alaska Fires Continue and Moderate PM2.5 over the Gulf of Mexico and Southeastern US
Smoke/haze over the South and Gulf of Mexico; Code orange for ozone in southern California, Utah and Alabama
Code Orange PM2.5 along Florida's Gulf Coast
Moderate levels of PM2.5 in the South and East of US; Unhealthy ozone levels in Southern California
SPECIAL FEATURE: IDEA International is Live
Haze continues in Great Lakes and Southern Mississippi Valley
Poor air quality in southern California; Smoke over Mid-Atlantic, Canada and Gulf of Mexico
Wildfires in Alaska; Smoke from Mexico
Moderate PM2.5 in the Northeastern US due to Canadian Fires in Quebec. Fires in Central America and Alaska Still Burning.
Code Orange PM2.5 in Northeast due to Smoke from Quebec Fires; Code Red PM2.5 Forecasted for Maine on Wednesday; Fires in Central America and Alaska Continue
Smoke causing unhealthy levels (code RED) of PM2.5 in the Northeast
Poor air quality in the Great Lakes States; Fires in Quebec; Pacaya volcano in Guatemala
Moderate to Unhealthy Air Quality in the eastern half of the country
Code Orange Ozone Levels in Texas; Smoke from Canadian Fires in U.S.; Moderate AOD in Several States
Fires, smoke, and aerosols activity in the US and Canada
Good air quality over the US; Smoke and aerosols from Canada and South
Moderate PM2.5 Air Quality Continues in Great Lakes and Mississippi Valley
Moderate levels of PM2.5 persist in the Great Lakes and Southern States; Curious air quality in Nebraska
Moderate air quality in the Eastern half of US
Sulfate under cloud in the Great Lakes States, dust in the southwest
Special Feature: What is going on in this image?
Moderate Air Quality Levels Throughout Country; Smoke from Central American and Canadian fires reaching into U.S.
Good and Moderate air quality: Agricultural fires and smoke in US and Canada
Air Quality Continues to be Good Across the Nation. Canadian and Central American Smoke over the US
Good Air Quality across the Nation; Some Fire Activity in the Plains States
Air quality in California improves; Action Day in Louisiana tomorrow
Volcanic ash forces Dutch, Irish, Scotish and UK airports to close
Moderate to unhealthy levels of PM2.5 and Ozone in California; Moderate PM2.5 levels in the Southeast and Plains States
Air Quality is generally good except in Southeast and Pacific Southwest
Moderate PM2.5 and High AOD Levels in the East
Good air quality in the US. Fires-Smoke and agricultural fires in US and Canada
Follow Up Video of NASA's Smog Bloggers Untangle Air Pollution 365 Days a Year Article
Moderate PM2.5 along Texas, West Virginia, the Mississippi Valley and southern Great Lakes states. Smoke from Agricultural Fires Persist over the Gulf of Mexico.
Code Yellow PM2.5 in Eastern Texas and Mississippi Valley; Smoke Persists over the Gulf of Mexico
Eyjafjallajökull follow-up
Moderate PM2.5 levels in the Plains States and South; Moderate ozone levels in the Pacific Southwest States
Haze lingers over the Mid-Atlantic and Gulf of Mexico
Haze in MidAtlantic and Southeast moving offshore
Special Feature: Eyjafjöll Continues to Erupt and Interfere with Air Traffic
Code Orange Ozone Levels in Tennesse, North Carolina, and Georgia; Smoke still in the Gulf of Mexico
International: New Ash Eruptions from Eyjafjallajökull Volcano, Iceland
Good air quality over the country; Smoke and dust in gulf of Mexico
Moderate Ozone AQI Levels over South and Eastern United States and Clear Skies over Baltimore.
Code Orange Ozone Forecasted for Parts of Texas and Louisiana for Wednesday; Smoke from Fires in Central America Lingers over Gulf of Mexico
Ozone is the main story in US today
EPA monitors air quality on Gulf of Mexico coast
Moderate PM2.5 levels along the Atlantic Coast; Fires in Mexico continue
Gulf Oil Slick Moving North Towards Coast
Ozone forecasted for USG for Midatlantic States
Code Orange PM2.5 Levels in El Paso, TX; Fires and Smoke in South
Unhealthy levels in El Paso, TX; Fires and Dust/Sand events
Special Feature: An oil slick two times per day
Moderate Ozone AQI Levels over Texas and Lousiana and Good PM2.5 Concentrations Along the United States. PM10 High Pollution Advisory in Arizona.
Code Orange PM2.5 in Southern California due to Haze; Code Orange Air Quality Forecasted for Pinal County, Arizona and Mobile, Alabama for Wednesday
Fires in Mexico and Central America; Moderate air quality in California
Moderate to unhealthy air quality in California
Moderate levels of PM2.5 in California and Great Lakes, Southeast and Mid-Atlantic States; Tornado Watch for SC, NC and GA
Good to Moderate PM2.5 and Ozone Levels; Large Smoke Plumes reported off the coasts
Good and moderate air quality levels on Earth day
Moderate Ozone and PM2.5 concentrations in the Great Lakes and Mississippi Valley states
Good PM2.5 and Ozone Air Quality across the Nation; Smoke from Agricultural Burning Continues
Coarse Particulate Aloft over Baltimore
Eyjafjallajökull webcams
Elevated NO2 levels in the Great Lakes and Mid-Atlantic States
Code orange for ozone in Southern California; Eyjafjallajökull follow-up
The "Mouthful" Volcano continues to create havoc in Europe
Smoke dominates today's air quality
Smoke, high AOD, and Moderate Air Quality in the East
Good and Moderate AQI; Fires continue and smoke spreads in east
International feature: Eruption of the Eyjafjallajökull volcano in Iceland
Code Orange and Yellow Ozone over Great Lakes and Mississippi Valley States. Smoke over Southeast, the South Central Plains, and the Mississippi Valley States.
Code Yellow PM2.5 in Mississippi Valley, southern Great Lakes, and eastern Plains from Continuing Fires; Code Orange O3 Forecasted for Parts of IN, IL, KY and TN on Wednesday
Use of Standardized United States Geographic Regions on the Smog Blog
Record of pollution in the Himalayas and the fires in the US continue...
Record pollen-counts in US; Smoke persists over the Great Lakes region
Heavy smoke affecting air quality in the Great Lakes States and Canada
Fires and Smoke in Central part of U.S.
Moderate PM2.5 levels in Mid Atlantic states; Several Fires and smoke in Central America and Gulf of Mexico
Moderate Ozone Concentrations over Mid-Atlantic states and Smoke over Gulf of Mexico
Fires and Moderate PM2.5 Air Quality Persist; Code Orange Ozone Forecasted for New Jersey on Wednesday
Fires continue in the Southeast; Moderate levels of PM2.5 in Central/South/East
Residual haze in the southeast and fires continue in the Plains states
Moderate levels of ozone and PM2.5 in the East
Moderate Levels of PM2.5 in East Coast; Fires in South
Moderate Air Quality Levels and Ozone over a big area of the Country
Pollution Advisory in Arizona, Code Yellow along Ohio River Valley and Clean Skies over Baltimore
Code Yellow PM2.5 in Midwest; Good Air Quality in East Due to Powerful Coastal Storm; Code Orange PM10 Forecasted for Wednesday in Arizona due to Blowing Dust
Fires in Central and Southern Plains and Midwest
Moderate levels of PM2.5 in California and Midwest
Dust in the southwest and small fires are widespread
Continued Good Air Quality Throughout the Country/ Smoke in Georgia
Good Air Quality; Unknown aerosols over the west; Dust storm from Africa
Clear Skies and Good PM2.5 AQI over Mid-Atlantic States
Fires and moderate levels of ozone in the South
Smoke remains over the Midwest; China and Southern Asia updates
Moderate AQI in California and Mid-Atlantic; Dust Storm in China
Scatter ye rosebuds while ye may .... It's Spring!
Fires and Moderate Air Quality in South as Agricultural fires Continue
Good Air Quality over the country; Agricultural burns continue in south
Clear Skies and Good AQI over the Mid-Atlantic States, Western Haze and Southern Smoke
Good Air Quality In The Us; Fires In Central America
Good air quality in the US; Fires continue in the South
Good PM2.5 AQI Levels and Smoke over Texas and Lousiana
If you like water, good air quality continues across the US: Acid Rain Edition
Good Air Quality Across the Country, Fires and Smoke in Texas
Air quality activity over the country; fires in south; fires in Asia
Air Quality Advisory Day in Minnesota, Pennsylvania and Maryland. Coarse particulate over Baltimore.
Code Orange PM2.5 Air Quality in the Midwest
Air quality worsens in the US (Midwest/Central/South/Northeast)
Smoke still visible over the Midwest
Smoke from the plains states moves through the Great Lakes
Smoke, Moderate to High AOD Over Central Plains
Aerosol of unknown origin moving from eastern Pacific; Dust over Iran
Moderate AQI in Central US and Air Quality Advisory Day in Minnesota
Another Good Air Quality Day; Fire Activity Picks up in Central America
Good to moderate air quality
Moderate PM2.5 levels in Central and Northeastern US; Fires in the South
Elevated PM in Idaho, Nebraska; Dust coming to the west coast
Good Air Quality Throughout Nation, Fires in South
Good Air quality over the country
Air Quality Improves in the Pacific Northwest and Ohio River Valley and Elevated Layers over Baltimore
Moderate PM2.5 Air Quality in the Ohio River Valley and Pacific Northwest
Air quality improves in the Midwest and South
Fires continue in the Southeast; Moderate to unhealthy air quality in the Midwest
US Southeast continues to have haze
Fires and High AOD Continue in South, Brief Code Red in Utah
Nepal Training: Posts on air quality in the Himalayan region
Fires and high AOD levels in south
Agricultural Fires in Southeastern US
Cleaner Air over Baltimore, Code Yellow in the Northeast and Agricultural Fires in Southeastern US
Non-Spherical Particles in Baltimore's Boundary Layer
Nepal Training: Transboundary effect of AOD
Nepal Training: Rainfall, the determinants of air quality in Nepal
Nepal Training: Fires in Northwestern India (Ludhiana)
Nepal Training: Scenario of Air Quality during Shivaratri Festival
Nepal Training: Strikes Improving Air Quality in Nepal!
Nepal Training: Air Quality Forecast for 23rd Feb 2010 for South Asian Region with special reference to Nepal
Nepal Training: Nepal Air Quality status (1 Feb-16 Feb,2010)
International: Haze in the Himalayan Region
High ozone concentration in New York and Illinois
Moderate air quality in California and in the Midwest persists
The country that should be covered in white is green
Code Orange in Mid West Due To Factors Limiting the Dispersion of Pollutants
Air quality in the US remain in the good-moderate range
Isolated Code Yellow PM2.5 Air Quality Conditions Continue
Code Yellow over Ohio RIver Valley and Mid-Atlantic States due to Snow Storm
Moderate levels of PM2.5 in the Midwest and Southeast
Good to moderate levels of PM2.5 in US and lots of snow
Green and white in the continental US and yellow in Alaska
Code Orange PM2.5 Levels Continue in Midwest
Fires in Florida and Cuba; Activity in AQI over the Country
Air Quality Action Day in Illinois, Indiana and California
Code Orange PM2.5 in Midwest and Southern California due to Haze
Moderate levels of PM2.5 spreading out
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Clouds, snow and moderate air quality in the Midwest and West
Another cloudy Saturday and Kilauea is putting out smoke and SO2
Fires in Florida /Good Air Quality For Much of U.S.
Fires continue in south
Prescribed Fires in Florida and Moderate AQI in Lousiana, Mississippi and Western US States
Good-to-Moderate Air Quality Persists
Good to moderate air quality; EPA releases new standard for NO2
Good air quality in most of the US; Fires and dust in the South
If the fires are continuing in the South, we can't see them.
Fires Continues in Texas and Louisiana
Fires and Dust in Texas
Dust South of Texas and Moderate PM2.5 AQI Levels
Mostly Good Air Quality across the Nation; Brief Period of Blowing Dust in West Texas and Southern New Mexico; Active Wildfires in Arizona and California
Fire and Smoke in Florida/ Overnight Code Orange in Several States
Air Quality improves in the East; Vog over Hawaii
It's a struggle to see the US from space today
Fires and Bad Air Quality Along The East Coast
Unhealthy air quality in Utah; Haze over the east coast
NASA Applied Science Mission Workship Announced
Smoke in Southeastern US and California, Air Quality Action Day in Utah
Code Orange PM2.5 in Utah and Montana; Small Fires in Florida and Georgia
Air pollution gets worse in Utah
Unhealthy levels of PM2.5 in Utah, Montana and Pennsylvania
Air Quality Continues to Degrade in the Mountain States
Fires Continue in Florida/ Code Red in California
Smoke in Florida and Hawaii; Volcano Awareness Month
Light Smoke Over Southeastern US, Air Quality Action Day in Utah
Code Orange PM2.5 in California and Utah
Moderate AQI persists in the West Coast, Utah and Midwest
Moderate levels of PM2.5 in the West and Utah; Volcanoes follow-up
California improves to Code Yellow under clouds
Code Red in California, Arizona, Pennsylvania, and Florida
Code Orange in west; High NO2 levels in California and Texas
Code Orange in Utah and High Pollution Advisory in Arizona
Code Orange Conditions Continue in Utah
Code Orange in Utah
Moderate to Unhealty levels of PM2.5 persist in the West
Code yellow and orange air quality in the West
Code Red PM2.5 Levels in California
Moderate and Unhealthy levels for sensitive groups in California and Oregon
Air Stagnation Advisory for Klamath Falls, Oregon and PM2.5 Health Watch in Arizona
Dust Storm in Arizona Causes Code Red PM10 Conditions and Kills 3 People in Automobile Crashes
Code Orange in California and Utah
Improved air quality over Midwest/Central US; Haze over California and Utah
Air quality in the West remains poor...
Conditions Worsen in Midwest
Winter Temperature Inversion: Poor Air Quality
Clouds, Good PM2.5 AQI, and Wood Burning Ban in San Joaquin Valley
Clouds and Good Air Quality across Most of the Nation
Imminent eruption of Mayon volcano, Philippines
Moderate PM2.5 levels in the Northwest, Midwest and Northeast
Cloudy with a chance of continued elevated PM2.5 & Ozone levels
Unhealthy Conditions in Oregon
Yellow and Orange PM2.5 AQI Levels over the West Coast
Stage 2 Burn Ban Issued in Washington State
Haze in Northern California and Washington State; Blowing Dust in Texas and New Mexico
Air quality improves in the West and worsens in the East
Moderate to Unhealthy PM2.5 AQI in Western US States
Poor air quality continues in the west...
Conditions Worsen as Haze in California Continues
Haze is still over California, high air quality levels
Code Orange continues in California
Code Orange PM2.5 due to Haze in Oregon and California
Moderate to unhealthy conditions in the West Coast
Dust offshore Los Angeles and some haze over San Joaquin Valley, CA
Air quality improves in California and worsens in the Midwest; Dust Storm in Arizona
Code Orange AOD Levels in California and Montana
Unhealthy levels for sensitive groups in California and Oregon on Thanksgiving Day
Unhealthy Air Quality in California and Midwestern US States.
Unhealthy for Sensitive Groups PM2.5 Air Quality Continues in the Midwest
Wisconsin has Air Quality Advisory extended until Wednesday
Air Quality Advisory for Wisconsin (code orange)
Code Yellow PM2.5 and High AOD in Michigan and Minnesota.
Code Orange PM2.5 levels in parts of U.S.; Large Area of Fires along U.S-Canadian borders.
Good air quality conditions over the country; Resurging of El Niño
Eastern US Air Quality Improves Thanks to a "Comma". Moderate AQI over the West.
Code Orange PM2.5 in California's Central Valley due to Haze; Conditions Improve in East
Haze over the east; moderate AQI prevails...
Moderate and Unhealthy PM2.5 levels along the Ohio River Valley
Midwestern Haze Continues
Moderate PM2.5 Levels in Central Part Of U.S
Moderate PM2.5 levels in a big portion of the country
Haze over Arkansas and Tennessee. Ida washes out pollutants from the Mid-Atlantic States.
Code Orange PM2.5 Air Quality Continues in the Northern Mid-Atlantic and Parts of the Ohio River Valley
Code Orange PM2.5 in Mid-Atlantic, Southern California, and Southern Oregon; Tropical Storm Ida Approaches Gulf Coast
Moderate to Unhealthy conditions in US; Thick smog over Delhi
November haze lingers over the Midwest and California
Haze and Clouds in the Midwest
Moderate and unhealthy conditions for sensitive groups in a great portion of the country; Hazardous volcano activity in Colombia
Unhealthy PM2.5 AQI levels in California
Air quality in California worsens; Fires in Northern Argentina
Moderate PM2.5 levels persist; Vog over Pacific
Moderate AQI in Central US and West Coast; International events
California has high NO2
Code Orange PM2.5 Levels in New York, Florida, and California
High AOD levels in Baja California due to dust
Dust over Western California and Moderate PM2.5 AQI Levels near the Great Lakes
Code Red PM10 and Code Orange PM2.5 in California due to Blowing Dust
Dust over Eastern China / Korea
Smoke and haze in California
Black Smoke Over Puerto Rico
Good air quality in the nation, except for California
A number we may never see again
Unhealthy PM2.5 Conditions in Tennessee
Puerto Rico Refinery Fires Captured by NOAA and NASA Satellites
Unhealthy conditions for sensitive groups in California and unhealthy in Pennsylvania
Moderate PM2.5 AQI Levels in the Eastern US.
Good Air Quality Today; PM2.5 Concentrations Rising into Moderate Range Tomorrow across Mid-Atlantic, Southeast, and Great Lakes
Unhealthy conditions in Wisconsin, Alabama and haze over the East
Unhealthy levels and haze in San Joaquin Valley
Code Orange PM2.5 in San Joaquin Valley, California due to Haze; Extremely Dangerous Hurricane Rick Strengthening off Southern Coast of Mexico
Healthy Conditions Across Most of the U.S.
Good air quality conditions over the cloudy country
Unhealthy PM2.5 AQI Levels in Denver. Soufriere Hills Volcano Still Active.
Very Unhealthy PM10 Forecasted for Today in San Joaquin Valley, California; Volcanic Activity Continues in Montserrat
New List of International Data Sources
Update on Montserrat volcano activity
Montserrat volcano spews ash; US remains calm and clean
A Blog Baby: Congratulations Nikisa and Michael
Unhealthy AQI in California; Possible haze offshore the Mid-Atlantic
Good Air Quality for Much of the US; Code Orange PM2.5 in California and Oregon
Good air quality conditions continue; Smoke over Oregon
Good Air Quality over the US. Smoke over Iowa.
International: Vog from the Ambrym Volcano in South Pacific
Another Quiet Air Quality Day for the U.S.; Interesting Set of Tropical Cyclones in Northwest Pacific
Smog Blog Data Sources - Updated and Categorized
Smoke/Dust over the Pacific; Dry Season in South America
New Help Files Available
Dust over OR/WA; Smoke from Sheep Fires
Haze over the Pacific; some moderate AQI reports, but generally good air quality
Good Air Quality Continues for the U.S
Good Air Quality conditions over the Country
Light Smoke over Midwest. Air Quality Action Day in Arizona.
Code Orange PM2.5 in Southern California; Code Orange PM10 Forecasted for Wednesday in Arizona due to Blowing Dust
Smoke over Northwestern, Central US and Mid-Atlantic/South
Air quality in Oregon seems to improve
Special Feature: The Milford Flats, Utah, Fire of 2007
Oregon fires are still producing significant smoke
Smoke over Oregon and Montana / Very Unhealthy PM2.5 Levels in Oregon
Fires continue but air quality improves in Oregon.
Unhealthy PM2.5 levels in Oregon due to Boze and Tumblebug fires. Santa Ana winds next threat to California wildfires.
International: Massive dust storm and extremely hazardous air quality in southeast Australia
An Additional Resource
Happy 6th Anniversary of the Smog Blog!
Fires in Oregon Producing Heavy Smoke
Good air quality; Minor fires in Oregon
Good air quality overall, despite some haze
Homogenous Planetary Boundary Layer Over Baltimore
Good air quality signals Autumn...
Stable Planetary Boundary Layer Over Baltimore
Good Air Quality Continues Across the U.S / Code Red Ozone In California
Good air quality conditions over the Nation; Smoke over California, Oregon, and Mississippi River Valley
Moderate Air Quality over the Ohio River Valley. Reconsideration of National Smog Standards.
Hazy and Cloudy Skies Over Baltimore
Another Quiet Air Quality Day
Moderate conditions over Midwest persist; Good air quality in California
UMBC Lidars Support NOAA's ARL and NCEP Mixing Layer Height Studies
Fires in British Columbia; Possible haze over Great Lakes
Unchanged air quality in the Midwest
Smoke Over Midwest / Good Conditions for Rest of U.S
Smoke is still Located over the Great Lakes; Good air quality conditions across U.S.
Smoke over Great Lakes and Air Quality improving in California
Moderate Air Quality Continues in Midwest; Mostly Good Conditions Elsewhere
Moderate conditions persist over Northern Plains/Midwest, CA and TX/OK
Residual smoke from fires persists over US mantaining moderate conditions
Haze in the Central U.S.
Fires in Southern California Continue / Good to Moderate Conditions for the Rest of the United States
Smoke continues over great portion of US and Canada; High Ozone levels in Los Angeles and Houston.
Smoke over the US and Canada. First signs of Canadian Smoke over Baltimore
Dangerous Wildfires in Los Angeles Area Continue; Smoke from Fires Spreads into Midwest; Good Air Quality across Most of U.S. Despite Influence of Fires
CA Smoke Advisory: Unhealthy to Hazardous air quality due to the fires
Smoke over the West US and Canada
More on smoke in California
Unhealthy Air Quality in California due to Wildfires
FIRES CONTINUE IN LOS ANGELES BUT AIR QUALITY CONDITIONS IMPROVE. DUST AND SULFATE OVER THE EASTERN US.
Smoke from a wildfire burning in the Angeles National Forest is causing unhealthy air quality in Los Angeles
Fires in Angeles National Forest Causing unhealthy Air
Good to Moderate Air Quality in U.S.; Dust in the Atlantic off East Coast; Another Tropical System Possibly Forming in the Caribbean
International: Importance of transparency of air quality information
AQI still good; Fires in the Northwest
Intense Fire Smoke in Southern Greece
Good air quality in US
Smoke in the West. Hurricane Bill bringing dust?
Smoke over Southwestern Canada and Nevada, Good PM2.5 AQI
Still smoke over the North West, light extinction over the Texas-Mexican border and over the Northwestern Atlantic
Smoke over British Columbia, haze over the Northern Atlantic and "unhealthy for sensitive groups" in California and Oregon
Scattered Code Orange Ozone and PM2.5 in the Northeast; Smoke/Haze Persists along East Coast; Bill Becomes a Major Hurricane in the Caribbean
Smoke/haze now over the North Atlantic
Haze/Smoke, high AOD and Moderate AQI over Midwest and Northeast
Moderate AQI in California and much of the East
Smoke from La Brea and Lockheed fires spread over California and Arizona
Thick smoke in Southern California and some light extinction in Texas
"Unhealthy for sensitive groups" in Southern California and smoke covers California, Nevada, Idaho and Montana
California Smoke and Eastern Haze
La Brea fire causing high AOD in California; Smoke over Canada
Moderate to Unhealthy air quality in the Midwest / East US
Aerosol Soup
International: Borneo burning
Smoke over much of Canada; Good to Moderate PM2.5 and Ozone Levels Across US
Strong light extinction in the North Western US/ South Western Canada and haze hovering over the Atlantic, offshore from the Northern East Coast
Transport of smoke over UMBC from British Columbia fires
Many fires across the country, smoke over the Northwest from Washington to the Great Lakes area; haze over the Carolinas, Georgia and offshore from the Northern East coast
Smoke from Alaska Fires Spreads across Northern U.S.; New Fires in California, Oregon, and Washington
AOD still high in the Northwest; Moderate conditions starting to spread out
Smoke from Alaska fires entering US; High AOD in the Northwest US/Canada
Poor air quality in Alaska, fires on the West Coast, & transported haze in the Southeast
International: Haze from fires in Indonesia and Malaysia
Very Unhealthy AQI in Fairbanks, Alaska
Smoke over the Northwestern part of the country, haze over the Texas-Mexican border
Smoke over Oregon, Washington and Idaho, “unhealthy for sensitive groups” in Oregon
Code Orange Ozone in California; Alaska Fires Continue
Good to Moderate AQI in US; Alaska fires update
Alaska fires update; Unhealthy AQI in Oregon
Persistent Smoke from Alaska & Canada
Special Feature: A new instrument at UMBC
Smoke from Northwestern Fires and Moderate PM2.5 over Ohio River Valley and southeastern US
Desert dust over the Gulf of Mexico and haze over Western Canada and some Northern US states
Unhealthy Ozone and PM2.5 Levels in California; Fires Continue in Alaska
Alaska fires update; Higher ozone levels in Georgia and up to unhealthy in California
Moderate to Unhealthy ozone levels in California; Fires in British Columbia and Alaska/Yukon Province
Nations Air quality conditions are similar to yesterday…
Generally good Air Quality for mid July
Unhealthy ozone concentrations in California, Moderate PM2.5 over the Eastern US.
Smoke over East Alaska, Northwest and Central Canada, and the Great Lakes.
Strong light extinction in Arizona and hazy conditions over the Atlantic offshore from Georgia
Code Red PM2.5 Air Quality in Alaska from Wildfires; Code Orange Ozone in Northern California
Smoke/haze moves off the coast; Code Yellow PM2.5 along the Gulf Coast and Code Orange Ozone in TX/LA
Smoke/haze clearly visible over the Atlantic…
Intense aerosol loads over Alaska, parts of Canada, and Southern U.S.
Special Feature: High Altitude Aerosols across the N. Hemisphere
Alaska Fires Continue, and Moderate PM25 AQI levels in Central US
Haze in the Southern US, strong light extinction from Nevada to Washington and over the Pacific
Air quality at the most “moderate” over the US and fires in California
Quiet Day for Air Quality in U.S.; Saharan Dust Continues over Caribbean
Smoke in Oregon and Northern California, strong light extinction over the Caribbean
Smoke over California, Fireworks and PM2.5
Sparks for the 4th of July…
Haze Along Gulf States. Good PM AQI Levels over the US.
Smoke over the Deep South and what seems to be dust over the Gulf of California
Haze over the Atlantic, offshore from the Northern east coast, possible smoke over the Midwestern US
Haze Moves Off-Shore; SO2 Over Alaska
Haze in the Deep South and hovering over the Atlantic, offshore from the East coast
Sahara Desert Dust over Caribbean
Haze over Southeast and Unhealthy Ozone AQI Levels in CA
Hazy conditions on the East Coast
Elevated Haze & Ozone expected…
Improved PM2.5 and Ozone Conditions/ Smoke/Haze over TX / LA / KY / TN / AK
Unhealthy ozone levels in Los Angeles region and Baltimore; Haze over IN/KY/TN/AL/GA/SC
Unhealthy ozone levels in California; Smoke over Texas, Louisiana and Quebec, Canada
Smoke Keeps PM2.5 in Moderate Range in Southeast; Ozone Season Begins to Heat Up
Smoke over Ontario/Quebec and Gulf of Mexico
Smoke over the South
Improved ozone levels; Fires in the Southeast
Double congratulations to our Nikisa!
Ozone Code Orange in California and Southeast
Smoke over southern plains, Canada, Alaska and light extinction over Florida
Smoke plumes over the Southern Plains, Canada and Alaska
Ozone Climatology in the Philadelphia Air Quality Forecast Area: the NOx SIP Controls are Making a Difference
Smoke from Fires Persists; Code Yellow PM2.5 in Parts of East; Code Green Ozone across the Country
Update on the fires in Canada and US
Smoke from Canada and Mexico fires
AQI in Florida and Georgia improving; Ozone levels still good.
Remnant Smoke over Canada and Southern Texas and Good Ozone AQI levels
Still smoke over Northwestern Canada, haze over the Texas-Mexican border and hovering over the Atlantic offshore from Florida
International: Haze in Malaysia increases
Residual smoke in Northwestern Canada, haze over the Texas-Mexican border and across northern Florida, Georgia and South Carolina
Moderate PM2.5 Air Quality Continues in the East; Smoke Over the Pacific Northwest
Moderate AQI in the East, Midwest and Southeast; Ozone levels improve
Moderate AQI and ozone levels in parts of South and Midwest
New Studies on Health Effects of Fine and Coarse Particle Pollution
Smoke is still apparent over the U.S.
Canadian Smoke over Northern and Central US
Still smoke over south western Canada and northern US, some “moderate” air conditions in the eastern US and California
Possible smoke from South Central Canada to North Central US, haze over the eastern part of the country and the Atlantic
Special Feature: 0300 UT on June 1, the Air France Disaster
Moderate Air Quality in Eastern U.S. and Southern California; Atlantic Hurricane Season Begins
Moderate Air Quality in Midwest, Southeast and California; Haze over the Atlantic
Good air quality in most of the US; Moderate levels of Ozone stretching from Texas to Midwest
Relatively good air quality for most of the nation except for Southern California
Special Feature: Maryland's Place in Space
Smoke over Central US and Gulf of Mexico, Unhealthy Ozone Levels in Texas
Smoke over the northern plains, probably over the Gulf of Mexico and first tropical depression of the season over the Atlantic
Smoke over the Gulf of Mexico, “unhealthy” air conditions in California and haze over Wyoming
International: Another view of smoke in Malaysia
Moderate Air Quality in California and the Midwest; Smoke in Mexico
International: Smoke intensifies in Indonesia and Malaysia
Light extinction over Pennsylvania, New Jersey and Kansas, visible fires in Ontario
Moderate air quality in the Midwest; Smoke over North Dakota and Central America
Moderate Air Quality in the Northeast & Midwest…
International: Haze in southeast Asia
Moderate AQI continues in the Midwest, Central U.S., & California
“Moderate” to “unhealthy for sensitive groups” ozone levels around the great lake area and visible smoke in Oregon
Ozone Levels Creeping Up Across Eastern U.S. -- Adios Amigos
A Beautiful Day with Good Air Quality
Conditions in CA have improved
Ozone is cooking in California
Smoke still coming from the Caribbean; unhealthy in Southern California
Code Orange (AQI) in California might persist during the weekend
Code Orange for Ozone and PM2.5 in California persists; Dense smoke over Central America
Ozone Levels Reach Code Orange in California; Smoke and Haze in Texas
USAQ Good overall; Fires in FL and Central America
Santa Barbara Fire Subsides; Heavy Seasonal Burning in Central America Continues
Cooler in CA and fires abate; Southern Texas still hit by smoke
Smoke continues to pour north from Mexico
Smoke over North Pacific from Santa Barbara fires and over Gulf of Mexico from Mexico and Central America fires
Smog Blog is featured in Scientific American
Smoke over Texas, offshore from south California and strong light extinction over Lake Michigan
Smoke Drifting North into Texas from Fires in Mexico and Central America
Mostly Good Air Quality; Stationary Front and Rain Persist in Eastern U.S.
Another Day of Mostly Good Air Quality across the Nation
Mixed air quality in the north and east; LA basin is draining haze westward
Pretty good air quality across the nation
Moderate to unhealthy ozone levels in California and Arizona, Moderate PM2.5 levels in California, Texas and Northeast
Code Orange Ozone in southern CA, smoke in Central America
Dust Event in Nevada, Limited Fire Activity, Mostly Good Air Quality
“Unhealthy” ozone levels for sensitive groups in New England and what seems to be haze over the Gulf of Mexico
Moderate Fire in FL, some PM and Ozone in the Northeast
Haze in PA and the mid-Atlantic
Coarse Particle Pollution in Southwest Virginia
“Good” to “moderate” air conditions and smoke over the Gulf of Mexico
Moderate air quality from Texas to Kansas and around the Great Lakes; South Carolina fires still affecting air quality
Significant smoke over Texas, Oklahoma and large fire visible in South Carolina
Code Yellow and Orange Ozone in the Central Plains, Texas, Florida, and California
Ozone in California; Fires Continue in Central America
Good PM; mostly quiet day
Haze from Ohio through PA and over much of California
Moderate PM air quality and moderate ozone in the Great Lakes states
Smoke over Gulf of Mexico persists; Moderate air quality in Texas, Oklahoma and around the Great Lakes
Wide smoke plume over the Gulf of Mexico due to Central American fires heading inland
Mostly Good Air Quality; Beginning of Ozone Season in Texas?
Good Air Quality in U.S.; Fires in Central America Continue
Heavy Smoke in the Gulf of Mexico, Dust off the Pacific Coast
International: Ash plume from the Galapagos
Smoking in the Caribbean affecting coastal cities
Smoke in Midwest continues and smoke throughout the Caribbean
International: A look at Europe finds haze in its eastern region
Oklahoma fires leading to unhealthy air conditions (code red)
Air quality improving throughout the day but still blowing dust and smoke in the central US
Large Smoke Plume in the Midwest
Intense Fires and Smoke in the Central Plains, But Widespread Code Green Air Quality
Smoke Remains in Gulf and Central America; U.S. mostly clear
Significant smoke plumes from the Yucatan and Central America
Fires in Oklahoma leads to moderate air quality; ozone high over the Gulf
Smoke over Gulf of Mexico persists; Blowing dust in the West; Ozone increasing in Texas, Oklahoma and California
Smoke over the Gulf of Mexico and what seems to be dust over Texas
Another Day of Good Air Quality in U.S.; Burning Continues on Yucatan Peninsula
Increased Scattering with Airmass Recirculation
Good Air Quality across U.S.; Meteorology Minute on Synoptic Patterns; Central American Burning Season Gets Underway
Another nice day, ozone plume dissipating
Still "green" across the US
SO2 Plume from Redoubt Volcano
Great air quality all across the US, unless you dislike snow
Clouds still covering large areas in US; Good air quality in most of the country.
Some “moderate” air conditions in the US, difficult to analyze due to strong cloud cover
Code Green Air Quality Dominates U.S.
Code Yellow PM2.5 Air Quality in Parts of Upper Midwest, Ohio River Valley, and Southeast ahead of a Low Pressure System; Code Green Elsewhere in U.S.
Midwest Haze
Smoke continues to move through midwest and east; Redoubt volcano erupts
Smoke from south and midwest moving through the Great Lakes
Smoke and moderate levels of ozone in Texas, Moderate to Unhealthy in California and Florida
“Unhealthy” around Los Angeles, smoke over Northern Texas and South Carolina
Several Code Orange Readings; Smoke and Haze Drifting East
Smoke and Haze in the Midwest Ahead of an Advancing Cold Front; Code Yellow/Orange PM2.5 Air Quality in Southern California
Moderate Air Quality Across the Midwest and Northeast
Elevated aerosol concentrations through the midwest and lakes states
Good air quality throughout the south, scattered moderate in the North
Scattered Code Yellow Air Quality in Great Lakes, Gulf Coast, and West Coast
“Unhealthy for sensitive groups” in Georgia this morning but mostly “Good” over the country.
International: Smoke in Thailand and improved access to global MODIS images
Code Yellow Air Quality in the Carolinas and Parts of California
Moderate air quality in the East; hazy area in South Carolina
East Coast Plumes Dissipating, otherwise quiet
Moderate air quality in the mid-Atlantic, smoke in south
Ditto.
Moderate PM2.5 Air Quality across much of the Eastern U.S.; Fires Continue in the Southeast
“Unhealthy for sensitive groups” due to fires in Alabama, strong light extinction in South Dakota, Nebraska, Illinois and Indiana.
ELF Digs Out of Snow
Moderate Air Quality from Oklahoma to Midwest, and Central Gulf Coast
Moderate to Unhealthy (code orange) in Oklahoma; Number of fires increase again in the Southeast
Lots of Snow, but not a lot of Air Quality events
Still mostly good air quality with a few fires in TX and LA
Good air quality across the majority of the nation
Number of fires in the South and Mexico increase again; Moderate to Unhealthy for Sensitive Groups in the Northeast
“Unhealthy for sensitive groups” around the Great lakes area and a few fires in the South East
Layer Aloft and Homogeneous Boundary Layer
Florida Smoke Drifting West, Moderate Air Quality Stretching from Gulf Coast to Upper Midwest
Clean air over Baltimore
Fires Continue in Southeast, Causing Moderate Air Quality
A Number of Small Fires Across the East and Gulf Coasts
Moderate AQ in the Carolinas; good elsewhere
Southeastern fires, fires, and more fires
Fires in Southeast and Central US; Unhealthy for Sensitive Groups in Oregon
"Unhealthy” in Oregon, small fires in the South and smoke over the Florida Keys.
Good to Moderate Air Quality, Fires in Central States and Florida
Another Quiet Day for U.S. Air Quality
Largely calm, high AOD readings in AL
Some haze and fires in Kansas and Oklahoma and good elsewhere
Happy V(og)-Day at the Smog Blog
Good to moderate air quality across the nation on St. Valentine's Day
Clear skies over Baltimore
“Unhealthy for sensitive groups” for a few hours in South Texas and smoke plumes over Florida
Moderate to Unhealthy to Sensitive Groups in the Northeast and Utah
Southeastern Smoke Aloft
Heavy Haze Continues in Northeast, Moderate Air Quality from Georgia to New England
Fires Continue in Southeast; Moderate PM2.5 Conditions in Mid-Atlantic, Parts of Southeast, and Parts of New England
Homogeneous Boundary Layer
Heavy Haze in Midwest, Fires in Southeast
Weekend Lidar Observation of Pollution over Baltimore
Haze in midwest; fires in the southeast (and southeast Australia)
Unhealthy air arrives in the northeast
Lots of fires in the Southeast leading to Code Orange in Florida; Possible Code Orange for Baltimore this weekend
“Unhealthy for sensitive groups” in California and Utah, smoke plumes in the southern US
Fires in LA and FL, California Improving
Haze Persists in California and Utah; Small Fire in Florida Panhandle
Signs of Frontal Boundary
Code Orange on Portions of Both the East and West Coasts
California continues to have problems, fires in Oklahoma
Poor AQ in southern San Joaquin Valley and a fire in Georgia
Unhealthy air for sensitive groups in California, fires in Oklahoma, Mexico, Cuba and Southeast of US
“Unhealthy for sensitive groups” in California, the rest of the country shows “good” to “moderate” air conditions
Mostly Moderate to Good PM2.5
Widespread Code Yellow PM2.5 Air Quality in the East
Still a Good Air Quality Day!
Finally! A day with very little to talk about.
International: Unhealthy PM10 levels in Thailand
Air quality has improved across the US
Yellow to Orange PM2.5 AQI Levels
"Unhealthy for Sensitive Groups" in Wisconsin and Utah; Fires in South Central and Southeast of US
Moderate PM2.5 AQI Levels in Baltimore
Still “Unhealthy” in Utah and clearly visible smoke over the Southeast
Homogeneous boundary layer and Moderate PM 2.5 AQI Levels
Living longer through cleaner air
Unhealthy Air in Utah, Fires in the Southeast
Elevated PM2.5 Levels Persist in Utah and along the West Coast; Moderate Conditions Widespread across the Northeast
Scattered Code Orange Across the Country
Moderate to Unhealthy for Sensitive Groups in several areas
Fires in Oklahoma, morning haze in CA, and haze in Utah
International: Clear day in KL, haze in Thailand
San Joaquin continues to be a bathtub; Fires in Florida
“Unhealthy” in California and most probably smoke from the southeast to Texas
Isolated Code Red PM2.5 Readings Out West, Some Fire Signal in NO2
Code Orange Air Quality Continues in California; Moderate Conditions in the East
Challenges of blogging at the equator
CA Code Orange Area Expands
“Unhealthy for sensitive groups” in California and what seems to be dust in the Southern US
Isolated high PM2.5 in the west and elevated NO2 levels in LA
Good AQI in Baltimore
Code Yellow for PM2.5 in West and some portion of Midwest; Fires in Southeast
Haze in the heartland and, yes again, California
Moderate PM2.5 in Upper Midwest, Parts of West, Small Fires in Texas
Haze and Fog in California; Small Fires in South Florida; Good Air Quality in the East
Good Air Quality today, California appears to be improving
Haze and fog continues in California; cloudy over much of US
International: Notes on southeast Asia air quality
Mostly clean air for the start of the New Year…
Moderate Air Quality in the Central Valley Continues
Fog in the SJV, hazy in LA, high PM beneath clouds in Provo and Baltimore in the news.
Fires in the Southeast, Degraded California Air Quality, and High Winds in DC
Monday's conditions persist
Haze Continues in Central California; Code Green Elsewhere
The San Joaquin Valley is hazy again; GA Fire
Generally Good Air Quality Across Nation
Tropospheric NO2 around the world (II) - Western and Central Africa
Moderate air quality over Lake Michigan
Santa’s Coming, and Air Quality
More of the Same: Code Orange Air Quality in California/Oregon, Lots of Clouds, and Small Fires in Florida and Georgia Continue
Overall Trends Continue; Some Small Fires in FL
Some thoughts on our "toolkit"
“Good” to “moderate” air conditions through out the country, haze over the Gulf of Mexico and light smoke over Florida
Mostly Good Air Quality Across the US and Tropospheric NO2 around the world
A cloudy view, along with poor air quality in the West & Midwest
Southeast Oregon and Northern California Reporting Elevated Levels of Particulate Matter
Good Air Quality Trends Continue due to Weather Systems
Good Air Quality Continues across the Nation Due to Weather Systems on the East and West Coasts
Widespread Good Air Quality (Including California)
Generally Cloudy & California’s AQI
Good Air Quality across Most of the Nation; Haze in California Persists
California Remains Unhealthy for Sensitive Groups, Good Elsewhere
Degraded Air Quality in California’s Central Valley
Haze over the Gulf of Mexico and the Texas-Mexican border, “unhealthy for sensitive groups” in Northern California
West Coast Air Quality Continues to be Code Yellow to Code Orange
Poorest air quality is in the San Francisco Bay area
Western Air Quality Remains the same
It's winter over the US - Mostly good air quality in the east and moderate to poor air quality in the West
Still “Unhealthy” in California, strong light extinction in Kansas and what appears to be haze offshore from New England
Still messy in California; fires in Arizona
Yesterday's Trends Continuing, Some PM Improvement in CA
Good Quality across the US except for California
Raining hard in the east; stagnant (still) in the SJV and volcanic smoke in HI
Special Feature: Severe flooding in Panama and Costa Rica
Moderate air quality in the West and Southeast
Sediment pollution from China and Improved Air Quality in California
West Coast Appears to be Clearing
Code Red PM2.5 in California's San Joaquin Valley Again
“Unhealthy” in California, strong light extinction over the Texas-Mexican border
Haze Continues in California; Moderate PM2.5 in Great Lakes and Northeast
More of the same in CA; midwest haze continues
Lingering haze in California
Smoke over Florida and continued haze in Southern California
Haze in the Southeast and Gulf Coast states, “unhealthy for sensitive groups” in California.
Fires Out West and All Over the Southeast
Monday's Trends continue, plus a few small fires in Louisiana
Good Air Quality, Unless You Live in Southern California
Hazardous air quality in southern California
Poor air quality in the West…
Thick Haze over the California Central Valley & OMI NO2 on Google Earth
Still very cloudy, at the most “unhealthy for sensitive groups” in California.
Good to Moderate Air Quality, Lots of Clouds
Good Air Quality through most of the country
Good Air Quality Continues Across the Nation
Air Quality improves to good across US, unless you are sneezing.....
Poor air quality continues in California…
Unhealthy Air in Bakersfield and smoke plumes in South Carolina
A few fires, calm conditions otherwise
Ohio: Code Red Air Quality, Code Blue Politics
Hazy conditions persisting over the great lakes and mid-Atlantic regions
Haze Entrenched over Great Lakes and Mid-Atlantic Regions
Midwest haze continues and is likely to persist
Haze blowing off the East and Moderate AQI in the Midwest
Air Quality improving in California, fires in the Southeast, and Tree Leaf Changes in the East
“Unhealthy for sensitive groups” PM2.5 levels in California and Indiana, “moderate” ozone levels in Arkansas
Code Orange Ozone in Houston, Code Orange PM2.5 in California’s San Joaquin Valley
The Trend Continues: Parts of California Code Orange, Good Elsewhere
Unhealthy for Sensitive Groups PM2.5 Conditions Persist in California; Good Air Quality Elsewhere
“Unhealthy for sensitive groups” air conditions in southern California
Some morning fog/haze, but good AQI overall
Moderate Air Quality in California and the Northwest; continued Smoke in Baja California
Smoke plume offshore from Baja California and “good” to “moderate” air conditions over the US
Fires in the Southeast, Dramatic Smoke Plume Near Santa Cruz, CA
Arizona Fires, mostly Good air quality elsewhere
Another Day of Good Air Quality for the Nation
Good air quality across the nation but the smell of burning leaves.......
Changing season brings better air quality?...
"Chalk Fire" Plume in California and HMS fire locations on Google Earth
Fires continue in California, mostly Good AQI elsewhere
California Fires Continue to be the Air Quality Focus, Rest of the Country Enjoying Clean Air
Moderate PM2.5 AQI Levels in Baltimore
Fires still burning in California and mostly “good” air conditions for the rest of the country
Fires continue north of Los Angeles and Moderate Air Quality in the northeast
What a difference a day makes, 24 little hours
Mostly Good Air Quality
Generally Good Air Quality across the Nation; Dust and Smoke in Texas and Mexico ahead of Hurricane Norbert; Blowing Dust in the San Joaquin Valley
“Unhealthy for sensitive groups” air conditions in southern California and south eastern Texas, suspended particles over Baja California probably pushed inland by hurricane Norbert
Clean Air Quality In Most of U.S., PM2.5 and Ozone in California’s San Joaquin Valley
Moderate PM 2.5 Across parts of the East and Midwest
Haze/Smoke in the Southeast and Mississippi River Valley
Smoke Continues over Southeast
Smoke in the Southeast and Canadian Dust
Good Air Qualiy over the US; fire activity in Arkansas and Louisiana
Mainly “good” particulate conditions over the country, “unhealthy for sensitive groups” ozone levels in Texas and haze visible over the Atlantic
Smoke/Haze Continues along Gulf Coast; Many Fires across the Nation
Smoke Along the Gulf Coast
Haze and Smoke plumes in the central US, code orange in Houston and Dallas
Oregon keeps burning and the midwest is hazy
Smoke / Haze in the Midwest, Central U.S.
Smog Lingers in Mid-West and Southeastern Canada ahead of Coastal Front; Tropical Storm Kyle forms in Caribbean and Moves North
Yesterday’s smog still visible across the eastern US, “unhealthy for sensitive groups” over California and an impressive storm over the East coast
Good PM2.5 Levels in Baltimore
Cold Front Sweeps Across Central U.S., Pushing Combination of Smoke and Smog Eastward
Good AQI Levels in Baltimore
Smoke Continues Over the Midwest
Goodbye Summer, Welcome Fall
Smoke Persists in the Great Lakes and Ohio River Valley
Summer ends with a blast.
Smoke from Oregon is still moving east and northward
Dense smoke over the Central U.S.
Smoke over the north-central and northwest pacific continues
Wide spread smoke plume over the West Northern states, “unhealthy for sensitive groups” in southern California and “good” to “moderate” air quality over eastern US
Low PM2.5 in Baltimore
Large Smoke Plume in the Northwest, Ozone in Central California, Good Air Quality Elsewhere in the U.S.
Air Quality Story Issued on Elevated Ozone and Fire Activity in California and Orgeon
Northwest Fires Continue to Burn, Eastern U.S. Clear
Good PM2.5 AQI Levels and Cloud Capped Boundary Layer
Fires and Elevated Ozone in California and Oregon; Good Air Quality across the Rest of the U.S.
Good air quality (but wet) across the country, except for CA
Hurricane Ike, poor air quality in California, and parts of the East
Ike over southern Texas, Lousiana, good Air Quality in the East, Unhealthy in central & southern California and Oregon
“Unhealthy for sensitive groups” air conditions in California, hurricane Ike making landfall between tomorrow and Saturday
Ike spinning west of Florida, and smoke in Northern California Continues
Fires Continue to Burn in California, Ike Approaches the U.S.
Smoke in California and Oregon, Mid-Atlantic Haze, as Hurricane Ike Moves Into View
Haze in the Carolinas; Smoke in California
Clouds in the East, smoke in the West, Overall good AQI
Good PM2.5 AQI Levels in Baltimore
Hanna about to reach South Carolina coast, moderate AQ in the East
Code Yellow/Orange PM2.5 AQI Levels and Low Level Jet over Baltimore
Unhealthy conditions in the upper east coast, tropical storm Hanna making landfall tomorrow
As Gustav Lingers in the Central U.S., Ozone and Haze Continue in the Midwest and Northeast
Clear Skies and Good PM2.5 AQI Levels in Baltimore
Midwest Haze and Continued Tropical Systems
Hurricane Gustav Makes Landfall; Smoke and Haze in Midwest Ahead of the Tropical System
Hurricane Gustav is the story, even in air quality
Smoke over the North Central U.S. and Hazy in the East
Post-script on China: Returning to Abnormal
Summer 2007 Olympics and Aerosols over China - via Giovanni
High Ozone in Southwestern Ohio, Houston, Atlanta, and California
Haze over the Midwest and in the Southern part of the US
Smoke from Midwest and Good AQI in Baltimore
Hazy midwest and scattered fires in northern California
Fires Continue in West; Another Day of Good to Moderate Air Quality
Good PM2.5 AQI Levels and Midwest Smoke
Smoke over the Midwest and mostly “good” to “moderate” air quality other the US
Fires in Upper Midwest; Blowing Dust in Nevada; Scattered Code Orange Ozone in California
Beijing Olympics: Concentrations rising but end of Games on clear skies
Stagnant conditions in Ohio River Valley clearing slowly
Beijing Olympics: Beautiful clear skies on penultimate day of the Games
Haze in Ohio and Great Lakes is locked in
Bonus Feature: International
Haze and Ozone in Ohio, smoke through the Dakotas, and wet in Florida
Haze over the mid-northern and eastern states, still smoke over California
Some context for Beijing's Air Quality during the Olympics
Haze Continues in East; Fires in Upper Midwest
Beijing Olympics: Clear skies with haze pushed south and east
Haze over Baltimore
Fires in California and Canada, haze in the mid eastern part of the US, fanning out over the Atlantic
Northwesterly flow into Beijing and clear skies reign
Fires Continue in Northern California; Haze and Ozone in the East; Fay Approaches Florida Mainland
Still Persistent
Persistent Smoke
Haze in the East, Code red in central and southern California
Beijing Olympics: Gold and Silver and Blue Skies..
“Unhealthy” in California, “unhealthy for sensitive groups” in northern Texas and dust hovering over the Atlantic
Particles Affecting Southern Florida, Ozone and Smoke in California
Fires in California and aerosols over the Gulf of Mexico
Beijing Olympics: Improved conditions
Fires Continue in Northern California; Scattered Code Orange Ozone in Southeast
Ozone problems in south and east, otherwise pretty good air quality
Monthly Summary of Aerosols over China from MODIS Terra - via Giovanni
Southeast Haze and more smoke
The Olympic competitions have started; the haze thickens
Good Hiking Weather in the East and Smoke in Oregon
Update: Yesterday’s CALIPSO overpass over the Caribbean
Haze fanning out of the south east and hovering over the Atlantic, still smoke over California and strong light extinction over the Caribbean’s
Beijing Olympics: Eve of the Opening Ceremonies
Beijing Olympics: Getting ready
Haze and Smoke Drifting Offshore in the Southeast and West
Moderate PM2.5 Levels in Baltimore
Haze from Texas to South Carolina, still smoke in California and tropical storm Edouard has made landfall on the northwest Gulf Coast.
Special Feature: Beijing Aerosol Optical Depth
Cloud Capped Boundary Layer
Smoke from Fires Continues in Northern California and Upper Mid-West
High AOD South of Beijing from MODIS Terra
CA and MT fires continue to spread smoke eastward; in China we can see smog from space
Smoke and Regional Haze
Special Feature: Smog International, Africa Edition
Haze and Moderate PM2.5
California Smoke over the US
It can be as hazy in Baltimore as in Beijing in lidar (but that's misleading)
Still smoke from California to Illinois and ashes from the Tungurahua volcano in Ecuador
Heavy Haze in the East, Smoke in the Northern Plains and West
Code Orange Skies over UMBC
Smoke in California and across the Northern US, haze in Texas and over the East coast
Beijing Olympics: Looking at the haze with lidar
Homogeneous boundary layer
Northern California is Still Burning; Hazy in the Northeast
Beijing Olympics: Trying to Clear the Air for the Games
Canadian smoke coming through the east
Smoke in the Midwest, California smoke moving East, & Haze over the Gulf
Smoke over Canada and Unhealthy Conditions in California
Cloud Capped Boundary Layer and Good PM2.5 Levels
Dolly transporting pollution?
Mid-Atlantic Haze Clears Out, Northern CA Fires, and Hurricane Dolly
Intense aerosol load over California and the Southeast
Moderate PM2.5 Levels in Baltimore
Haze Continues in Mid-Atlantic and Southeastern US; Mostly Good Air Quality Elsewhere
A bad air pollution day across much of the Eastern US and CA
A hot and unhealthy weekend in California and the Eastern part of the US
Air Quality Action Days in Baltimore
Code Red Ozone in Baltimore and Philadelphia, haze in the Southeast; poor air quality in Northern California
Okmok volcanic plume observed over the Pacific Northwest
Fine Particulate Matter (PM2.5) Concentrations Increase in the East
Air Quality Event Building in East and Midwest, Lingering Smoke in California
Fires still visible over California, mainly "good" to "moderate" air quality conditions over the US but it won't last...
Homogeneous boundary layer and Good PM2.5 AQI
California Fires Continue, but Air Quality Improves to Good-to-Moderate across the Country
LLJ over Maryland
Poor Air Quality in Northern California continues, light haze in the east
Widespread smoke plumes lingering over California, drifting across the US continent and strong haze over the East coast
Clouds and Good-Moderate PM2.5 AQI
Code Red in Northern Californa and Smoke Moving East
Improvements on the East but Poor AQ in the West
Fires Continue in California, Haze and Smoke in Coastal New England and Upper Midwest
A little of everything for early July
Fires and Unhealthy Air Quality Continue in California; Code Orange Conditions in Ohio
Typical air quality conditions for July? More on Western Smoke…
Fires in the West, high particle load over central US, haze in the East and still dust over the Gulf of Mexico
4th of July fine particles
Smoke, Haze, and some Dust…
Homogeneous Boundary Layer and Smoke
Hazardous Air Quality in California – Fires Continue for Another Day
Fires Producing Intense Smoke in North America….
Another Day of Unhealthy Air Quality in the West as Smoke Moves North into Oregon
Improving in CA and the northeast degrading in Texas and southeast
Fires continue, air quality not as bad as yesterday in Northern California and Saharan dust over the Gulf of Mexico
PS from California
Very Unhealthy Air Quality in California Continues
Very unhealthy air quality in California, Hazy East, and African Dust arrives
California Smoke Altitude from two LIDARS
Smoke Intensifies in California, Spreads Across the West
Smoke in Los Angeles seen by LIDAR
Smoke in California, Moderate PM on the East, & Dust approaching
Smog Story: California Fires June 22-24
Unhealthy PM2.5 Air Quality in Northern California Due to Widespread Wildfires
Big Day for Fires and Dust
No visible smoke, mostly “moderate” conditions over the US and two major dust storms over West coast of Africa and Middle East.
Mostly Moderate AQ in the East, Code Purple in Atlanta, and unhealthy AQ in central and southern California
Southeastern haze continues…
Smoke in eastern North Carolina and Southeastern Virginia
Good PM2.5 AQI Levels and Cloud Capped Boundary Layer
Cloud Capped Boundary Layer
Great air quality in most of the Northeast; Southeastern Haze/Smoke, and poor air quality in California
Smoke from NC Fires Continues to Flow East Over Atlantic; Code Orange and Yellow Conditions along East Coast Ahead of Cold Front; Code Orange Ozone in California
Smoke continues in east, midwest and north; high ozone in California
Smoke fanning out of the east coast and further inland over California
International: Air Quality Services in Europe
Friday 13th: ELF Prowls Low Level Jets
Smoke returns to the D.C area, high ozone in Californa, Pennsylvania and New York
Calipso and Hazy Skies
Still smoke over North Carolina, California and “moderate” air quality in the eastern part of the US
ELF Cools Down: Clear Skies
Improved Air Quality in the Mid-Atlantic, and North Carolina Fires Continue
ELF Feels the Heat
Intense smoke from North Carolina Fire
Moderate to Unhealthy Air Quality in the Mid-Atlantic and Southern California
Going from Unhealthy for Sensitive Groups to Unhealthy for Everybody
Code Orange in the Northeast & Fire continues in North Carolina
It’s heating up…code orange air quality!
Moderate to Unhealth Air Quality in the Mid-Atlantic
Fire in Hyde County, NC
Good Air Quality in Central California, Haze in the Southeast, and Smoke over the Atlantic
Moderate Air Quality in the East
Smoke over Lake Superior
"You don't know what you've got....
Scattered haze, but overall pretty nice
Hazy conditions in the Southeastern U.S
Some Smoke in West Texas and Eastern New Mexico
Good Air Quality in the Northeast
Code yellow PM2.5 concentrations on the East
Haze in the Mid-Atlantic and Texas
Special Feature: Lidar on Mars!
Smoke from Mexico continues and ozone is picking up
Some haze in the south
A little haze over Texas and the Gulf
Santa Cruz, California Fire
Okeechobee Fires Continue
Fires in Alabama & Louisiana; some haze....
Welcome to the 2008 Ozone Season!
Florida, Southern California and Salt Lake City are today's stories
Aerosols in the South and North
Fires in Florida and High Ozone in California
Aerosol Optical Depth high over Gulf, Florida fires…
Clouds high and low
Fire Activity in Mexico and Central America
Smoke in Florida and Unhealthy Air in Central California
Haze Lingers, Moderate AQ in Central U.S., & California fire
First rain, then smoke
Moderate PM in Florida, Southern Texas, and Southern California
Special: Chaiten Volcano Photography
PM2.5 elevated in California and Florida
Hazy West & South…
Haze in Southern Texas and Smoke in Mexico
Good to Moderate Air Quality & surface smoke
Smoke Plumes in California, Florida, and Moderate AQ in the Eastern U.s
Haze and Cloud Capped Boundary Layer
Aerosols Aloft, Fires in the South, & Hawaiian Volcanic smog
Mostly Good Air Quality Across the U.S.
Moderate PM in CA and DE; Ozone is up in Texas
Haze in parts of Northeast, smoke in south Texas
Haze over Maryland, New Jersey, and North Atlantic
Hazy East, Midwest; some clouds and major fires in the South
Some smoke and Good to Moderate AQ across the U.S
Haze/Smoke still lingers….
Some more on smoke/haze over U.S.
Central U.S still impacted by Smoke
Cloud Cover and Some Moderate Air Quality Reports
Haze through midwest, fires in California
SO2 and haze from Kilauea volcano in Hawaii
Haze in east, haze and smoke in the west
Smoke in the Northwest, Canada, and Texas
Morning Haze and Clouds
MORE ON "Long Range Transport....Power of LIDAR "
Long range transport of aerosols to the Western U.S….This time we see the power of LIDAR
Haze in the north-central U.S continues, moderate AQ in the Great Lakes
SOME MORE ON "Intense haze over Nebraska, South Dakota, Iowa..."
MORE ON "Intense haze over Nebraska, South Dakota, Iowa, Wyoming, Montana.."
Intense haze over Nebraska, South Dakota, Iowa, Wyoming, Montana, and Minnesota…the power of satellite derived Aerosol Optical Depth.
Haze over the Great Lakes region
Midwest haze
Code Yellow in the Northeast, Great Lakes, and California, Fires in Kansas
Moderate Air Quality Across the Eastern U.S
Some Haze over D.C this morning
More reports of Code Yellow (moderate) Air Quality
Good Weather & Air Quality in Maryland
Good to Moderate Air Quality and fires in the southeast
Several Fires Across the Country
Good AQI and Cloud Capped Boundary Layer
Good Air Quality Continues but the Central U.S. is on fire
All good...
Air quality is very good across the country
Hazy in Southern Texas and Ohio
Haze and Moderate PM2.5 Levels
Clearing in the East & dense cloud cover in the Midwest/Central U.S
Springtime, when we look south for haze.
Moderate Air Quality and Haze still lingers
Southern Smoke plumes and visible haze. Land is also greener
A few fires in Kansas and Oklahoma
Air Quality is good, it's final four day!
Haze over Iowa, Good Air Quality Elsewhere
Mostly Good AQI around the nation
Homogeneous Boundary Layer and Good AQI Levels
Smoke Plumes in Kansas and Turbidity in Lake Erie
Moderate air quality in California, mostly good conditions everywhere else
Cloudy skies, fairly good air quality, Dust Storm in Texas, and more…
Dusty in the southwest
Pretty good air quality all across the US
Moderate Air Quality in the East, Texas and Haze in the Atlantic
Fires Persist and Moderate AQI Reports
Fires in the Southeast and Smoke Plume in South Carolina
Aerosols Aloft and Moderate AQI Levels in Baltimore
Lots of Fires in the South
Surface smoke due to fires
Good Air quality
Haze and Ozone in the Southern US
Many fires in the south
Hazy conditions and Smoke from fires
Light Haze in California, Iowa and Missouri
Smog over the Gulf region & more cool clouds
Good Air Quality Continues; Some haze and cool clouds...
Haze and Smoke in Texas and New Mexico
It's just a beautiful, beautiful day
Moderate Air Quality in the Eastern US
Haze over the Atlantic & Moderate Air Quality
Lots of smoke plumes in the Southeast, Hazy in the Midwest
Moderate AQI reports and visible haze
Many fires remain in the South
Good air quality and snow
Good Air Quality across the Nation, except for CA
Slightly hazy in the Northeast
Several fires visible in the South…
Smoke plumes in Texas, Louisiana and Florida
Good Air Quality continues and Clouds cover the East
Homogeneous Boundary Layer, Clouds and Good AQI
Generally Good Air Quality Around the Nation
SO2 plume on Hawaii
A little smoke, dust, and ash
Texas fires and haze in CA, Georgia
Good to Moderate Air Quality in California, Smoke plumes in Florida
Fires in the Southeast. Also, haze over California & Hawaii
Air Quality Improvement in the East, Moderate Air Quality in California
Giovanni Tools for Air Quality
Air Quality Improvement in the Midwest
Fire in Texas
PM2.5 concentrations are elevated across most of the East
Widespread unhealthy for sensitive groups in Great Lakes States
Poor air quality in the midwest and Utah
Congratulations to our own Ms Nikisa Jordan
Unhealthy Air Quality in Northern Utah - AQI/MODIS view on Google Earth
Unhealthy Air in Salt Lake City
Fires in the Southeast, Moderate Air Quality in Northern Utah
Improving conditions in western U.S.
Poor air Quality Continues in the Western U.S.
Haze in California and poor air quality in Utah
Moderate haze in the Carolinas and in California
Good to Moderate Air Quality Across the US
Air Quality Improvement in California, Moderate conditions in the Midwest, and North Carolina Smoke Plume
Unhealthy Air Quality in California, Moderate in the Central US
Several moderate air quality reports and poor conditions in California…
Many fires in the South & California Haze…
Western haze continues
Strong haze in central California, light haze in the southeast
Unhealthy Air in Central California, Fires in the southeast
Moderate Air Quality in California & the Midwest
Moderate Air Quality in the Northeast and California, smoke plumes in the Gulf
Moderate Air Quality Remains
Moderate Air Quality over Most of the East and Central U.S.
Temperatures rise and air quality falls in Northeast
Moderate AQI levels in Illinois and fires in Florida
Moderate Air Quality in Central the Central US and California
NOTE: Click here for the Texas map
Homogeneous Boundary Layer
More dust in Texas, Haze over the Gulf & Atlantic
Good Air Quality Across the US
PS(2): Texas Dust storm leading to high AOD
PS on the Texas dust storm
Dust Storm in Texas, Florida Fires, and AQI Improvements
Haze visible and Moderate Air Quality Reports
Mild haze in Capital, good air quality elsewhere
Cloudy, moderate conditions.. it's winter..
Poor air quality in the Pacific Northwest...
Moderate to Unhealthy Air Quality in Utah and the Northwest
Some residual light haze in the Pacific Northwest
Moderate Air Quality in the Northwest
Clean air across the U.S.
Poor air quality continues in western U.S.
Interior California and Oregon still have haze
Unhealthy Air Quality in the West
Moderate Air quality in upper midwest, central California and Northwest
Unhealthy Air Quality in LA and Bakersfield, Moderate in Washington State
Light haze and Moderate Air Quality
Poor air quality in California
Fire in Louisiana and unhealthy air quality in Bakersfield
Haze in the midwest
Unhealthy Air Quality in Los Angeles and Washington State
ps on LA
Moderate Air Quality in the Upper Midwest and Southern California
Large Brush fire creates Havoc in Lakeland Florida; Visual Air Quality Degraded
Poor air quality continues in the Northeast…
Air Quality Action Day for several states in the Northeast
Dust in southwest
Moderate to Unhealthy AQ in the north east
Moderate in the northeast
Unhealthy for sensitive groups in western Massachusetts
Light Haze in the Northeast
Moderate Air Quality in Northern Utah and California, smoke plumes in Florida
Poor air quality in the West
Generally Good Air Quality
Good air quality
Mostly good air quality, with some moderate readings in midwest and California
Some moderate AQ levels in CA and through midwest
Moderate AQI in South Carolina and through the Great Lakes
The US is almost entirely covered in clouds today
Code yellow air quality in the Midwest, Northeast, and code orange in California
Moderate Air quality in the Midwest and California
Update for Santa Barbara California
Good air quality in most of the U.S.
Good air quality over most of the US except overnight in San Joaquin Valley
Unhealthy air quality in Klamath Falls, Oregon
Moderate AQ in the U.S Midwest
Code Orange in the Upper Midwest
Poor Air Quality in the Midwest and Northeast; Smoke plumes in the Southeast
Poor air quality in the Midwest and Elsewhere
Moderate Air Quality Continues in Several Regions
Several Smoke Plumes Visible in the South
Haze continues in California
Snow, sleet and ice in the east, haze moving through TX and San Joaquin is poor again
Unhealthy Air Quality in California and Oregon
Special Feature: Artwork from Space
ps (answer to the question about whether it is high/low cloud ... above)
Code Orange in Central California and a new resource for True Color Imagery
Hazy in California, Moderate Air Quality in Several Regions, and Southern Haze moves offshore
Haze responsible for moderate air quality in California and the Southeast. Also Extensive Cloud Cover
Haze in the northeast
Haze in the southeast continues
Hazy in the Southeast and a short period of unhealthy PM2.5 in Atlanta
Good Air Quality in California, Clouds and Light Haze in the East
Fires Activity in the Gulf Continues
Several Fires Intensify in the South
Aerosol concentrations are in the “good” range, but high tropospheric NO2 values and Several Fires
Clear in most of the US
Fire continues in Hawaii, Big winter storm hits eastern U.S.
Poor air quality on the Gulf and smoke in Hawaii
Special Feature: Some dust in Cape Town and Farewell
Good Air Quality in the East, Moderate in the Gulf Coast
Special Feature: Air pollutants in South Africa and the need for more 'eyes'
Haze in California and the Gulf Coast
Clear day
Special Feature: Multiple monitors needed to describe air quality in Cape Town
CA & SC
Special Feature: High UV levels and good air quality in South Africa
Poor AQ in CA
Special Feature: Continued good air quality in most of South Africa, with some light haze off east coast
Moderate AQ in CA
Special Feature: GEOSS Summit in South Africa
Your comments now welcome!
Fires in the Northwest, improving conditions elsewhere
"Almost paradise, almost" - Another Santa Ana and more Malibu fires
Moderate AQ in California and Washington State
Improved Air Quality in the East
New Mexico Fire
Summaries of summer air quality events and the California fires
Smoke plumes, haze, clouds...
Haze continued in CA
Intense haze continued in California
California again has haze problems
Good AQ in the East, smoke plumes off the Gulf Coast
Unhealthy Air Quality in Central California
Hazy in California…
Elevated AQ over the East
Cloudy over the U.S.
Moderate air quality across eastern half of the U.S.
On Remembrance Day, we remember
Tough viewing through high clouds
Moderate AQ in the Central U.S
Poor AQ in California continues, Fires in Southeast
Cloud Capped Boundary Layer
Western AQ
Fire and air pollution story recap
Hazy South
Clear day
haze continues in south-central
Haze in south-central continues
Air Quality is poor in Ohio and in California
Poor Air Quality in California and hazy southeast
Movable Type 4 has been installed
ELF/CALIPSO Trick or Treat
Haze over the Southeast
Summary of air quality from California fires
Fires around the Nation…
Clear day
Fires
Clear day
Review of California fires from the OMI instrument
Smoke in the middle US
Fire in Hawaii
PS, from 35,000'
Smoke over much of the Western U.S.
Cooler Weather Brings Some Relief to California
Smoke in California, Nevada, Arizona and Utah
Smoke Over Southern California
California Smoke moves inland
Some improvement in Southern California AQ
Fires near Houston, Texas
Dense California smoke continues
Smoke over the Pacific
At USAQ, we want you to take care
NASA and EPA Story on fires and dust in California
Full MODIS Terra image of the California smoke plume
California Fires still on
Mid-afternoon aerosol image for California fires and dust
News story on three days of dust and smoke
More on California fires
fires
Update: MODIS Aqua image of Southern California fires and dust
Smoke and fires cause Code Purple air quality in southern California
Large dust storm in southern California
cloudy in the east
Haze in the northeast and southern Texas
hazy and humid
Moderate AQI Levels
October or August ?
Moderate haze in midwest and midAtlantic
hazy day
Good PM2.5 AQI Levels
Good to Moderate AQI
Haze, smoke, but generally good
Mostly local pollution today
very clear day
No News is Good News
Fall is here and Smoke plumes in the South
Rising Boundary Layer
Improved AQI
AQ Yellow in NE
Hot and Hazy
October Haze
Just a little haze in upper midwest and midAtlantic
Hazy through the Great Lakes
A little hazy in the Great Lakes
clear and humid
Some haze in Illinois and Kansas
Southeast fires
clear day with low clouds
Some Clearing, but Fires and...
Clouds
South America is burning
clear and cloudy
A little light haze in the midwest
Mostly clear across the US
Improved AQ in the Northeast
hazy day with thunderstorm
Hazy Midatlantic and Northeast
Haze : A reminder of what summer is all about.
Haze Remains
got hazier
Eastern Haze…
Clear skies and layer aloft
Clear Skies
haze band moving
The Smog Blog is four!
Band of haze
Autumnal Equinox and things are changing
Clear day
Haze over the Northeast
Smoke and Haze across the midwest
NASA GIOVANNI AIR QUALITY MAPS AND SERVICES
Clouds and Homogenous Boundary Layer
Code yellow & fires intensify
clear day
Midwest Haze
Clear day
smoke in the west
Recovery blog - Jill's back from Austria
Bogged down blogging
Good Air Quality in the East
Smoke in the Northwest and Central US
Partly cloudy
Some Improvements…
Clear Skies in Maryland…
Relatively the same AQ
Moderate AQI & Smoke
Storm and more...
Still hazy, but got better
Endless Summer
Still hazy
Haze in California
Hazier than yesterday
Haze in the Great Lakes and California
more hazy than yesterday
Fires & Moderate PM
Different day, same story
Clear day
Haze & Smoke is still here...
Haze in southcentral U.S., smoke in Oregon and northwest
Clouds and Haze in the Southeast
Partly cloudy day with cold front passing
Elevated AOD
Haze and Clouds in the East, Smoky Northwest
Haze in the Southeast, Fires in Idaho
Moderate conditions, fires still burn in northwest
Fires
Curl of smoke
Hazy Northeast
Fires in Southern Greece Kill over 40 People
Haze
Eastern Haze & CA Fires
Clouds, Haze, Ozone...
That is a stubborn blaze in Santa Barbara County
Improved conditions, still large smoke plume in southern California
Clouds & Haze...
Did the smoke suppress the clouds in Montana
Smoke across the midwest and midAtlantic, fire in California
Improved AQ in the Midatlantic
High AOD across the nation…
Smoke widely distributed
Smoke and clouds
Hazy...
Report on IMPROVE Sulfate Trends
Smoke layers
Smoke, Smoke
CALIPSO overpass
Another hot summer day + Western fires
Large fires continue in the northwest
Still smoke in northwest and southwest
smoke in the northwest, southwest and southeast
Haze in the southeast, smoke in northwest and So. Cal
AQ still poor in the southeast
Poor Air Quality in Baltimore
Smoke plume in CA
Poor AQ in Baltimore
Haze in southeast/midAtlantic, fires in the west
Heat wave
Moderate conditions in the East
Smoke and Low Level Jet
Smoke in Idaho, Montana, haze in the east
Smoke and haze across the U.S.
Moderate AQI in Midwest and East
Three Dimensional Air Quality System
ID and MT smoke over Baltimore
Clear day
Smoke Continues….
Dense smoke continues in west; haze in midwest
Large fires in Montana and Idaho, also L.A.
CALIPSO overpass
Smoke in the northwest
Clear and Hot
Moderate AQI for the East
Clearing up
Remaining hazy in the east
Warm and Dry
Smoke in the East
Smoke in the west
Moderate air quality and possible dust in the Gulf
High pressure with low clouds in the afternoon
CLEAR SKIES OVER UMBC AND GOOD AQI LEVELS
Smoke in the northwest
Moderate conditions in the southeast
Fair weather
Cirrus and Cumulus Clouds
Smoky West
Clear with cirrus
Smoke in the Northwest
Cloudy with a Patch of Rain
Hazy in the southeast
CLOUDY CALIPSO OVERPASS
Congratulations Dr. Raymond Rogers!
Smoke from Canada
Smoke in the central and western U.S.
WAVES Overpass
Remaining smoky in the northwest
Cloudy but interesting night
Smoke and fires in Northwest continue
Western Smoke
HIgh clouds
Low AOD in the East and smoke in the northwest
Clear day
Smoke continues in the Northwest
Clear day
Fires in Pacific Northwest
Low pressure with thunderstroms
Moderate conditions in the northeast
Hot, Humid and Hazy
Smoke in the west
Very poor AQ in Baltimore
Hazy Start in the East…
Smoke covers the western U.S.
What's the High AOD in the West?
Running when there is no clouds
Haze in NC and VA
Poor air quality in southern California
Live feed to the UMBC lidar
Light haze, a few fires
Hazy in the East and still smoky in Utah
Clear day with low clouds
Very clear day
Clear skies in Baltimore and smoke in Utah
Light haze, light smoke
Smoke & Haze
Smoke in Canada, Utah, and Central U.S
Hazy day with a shower in the afternoon
Haze in the northeast
Still too close to home
Moderate AQ in East
Inhomogeneous Boundary Layer And Unhealthy AQI Levels
Smoke in Wyoming and poor ozone AQI in Baltimore MD
Hazy day with CALIPSO overpass
Smoke in CA, AK and haze in the Gulf
A Little Too Close to My Old Home
CALIPSO overpass, Beginning of WAVES2007
Southeast haze, dust in the Gulf of Mexico
Code Yellow Southeast
Canadian/Alaskan Smoke, Caribbean Dust
Clear with Fair Weather Clouds
Major event in air quality in Baltimore last week
Clear Skys
Dust in the Gulf of Mexico, Smoke in Alaska
Clearing up
Smoke/Sahara Dust in the South
Improving air quality in the East and smoke in Alaska
Moderate To Unhealthy AQI
Still very hot and hazy in the East
Hazy day
Still very hazy in the East
Moderate Haze at UMBC
Haze in southeast and northeast
CALIPSO catches the fires in Quebec and dust in the Gulf
Eastern Haze...
Animation of the Quebec Fires
Haze, Smoke, and Dust
Central and southern haze, smoke in Canada
Cloudy and Hazy Skies
Still hazy in the southeast
Partly Cloudy Skies and Rising Boundary Layer
Slightly higher AOD in the southeast
Remaining hazy in the southeast
Haze in the southeast
AQ Improved
Moderate to Unhealthy AQ in the East
Warm Sunny Day
Haze begins to build in the Midwest and MidAtlantic
Good AQ in Baltimore MD
Cloudy day
moderate AQ in the West and northeast
Cloudy skies
Analysis of MesoAmerican pollution event
Haze west of TS Barry
Hazy & here comes Barry…
Active Boundary Layer
Moderate to Unhealthy AQ in the Northeast
One and a half day run
Haze and smoke, east and west
Burn scars from fires in Georgia and Florida
Clear and Warm Wednesday
Still hazy in the Midwest
Post Haze Event
Sunset over UMBC
Still smoking in FL and GA
After the rainout
Remaining hazy in Baltimore
Before the storm
Haze in east, intense smoke in Georgia and Tennessee
Hazy In Baltimore
Hazy Day
Hazy East & Midwest
What’s that over Eastern Canada?
Hazy Northeast
Intense smoke and haze east of Mississippi river; fires continue in Mexico
Two new websites: Clean Air Partners and UMBC Weather
Very hazy in the East
Still hazy in the southeast
Special Feature: Fires and Smoke in MesoAmerica
Still Smokey in the southeast and possible African dust
Smoke in the south continued
Hazy/Smoky Southeast & West
Smoke in Mexico, moderate AQ in California
Smoke in Louisiana
Astronaut photos of November haze
CALIPSO OVERPASS AND HAZE
Hazy in the East
Hazy and sunny day
Still hazy in the south
Clear and cloudy day
Three major plumes
Smoke continues in the Southeast, Midwest, and Southwest
What a day for wildfires....
Humid and hazy day
Smoke in northern and southern U.S.
Swirling smoke in the tropical depression and fires in Canada
Lingering smoke over Florida
Unhealthy air quality in Florida due to fires in Georgia
Clear and nice day
Higher AOD in central U.S.
Residual smoke in Gulf of Mexico
CALIPSO Captures the Georgia Fires
Clouds Roll In…
Still very smokey in the southeast
Other coverage of the fires in Georgia
Smoke covers the southeast U.S. and Gulf of Mexico
Smoke coming north
Smoke in Georgia and Florida
GA
Big fires in Georgia
Beautiful cloud features
Smoke in the Gulf and Yucatan
The effect of smoke on cumulus clouds
Hazy Gulf
Smoke from the south
Hazy in the Midwest
Smoke in the south
Code yellow & Georgia Fires Subside
Southeastern Fires….
Georgia Fires Still Going Strong
Eastern Haze
Big fire in Georgia
Haze in Central U.S.
Fires and smoke in the south, possible dust in the west
Low AOD, good AQ, fire in south
Good air quality in wake of major spring storm
New near-realtime data source: OMI NO2 data
Cloudy but generally good AQ
Hazy in Southern Texas and Northern Mexico
Good air quality and a view of Texas
Hazy day
Moderate air quality in the east
Hazy in southern TX
Good AQ
Globetrotting: Air pollution in Europe
Good air quality for Easter
Code yellow in California
Moderate AQI in southern California
Scattered spring fires
Smoke plumes
Fog and Haze
Poor air quality in southern CA
Clear and nice day
good AQ
Good air quality across the U.S.
Clouds & Haze
Hazy southeast
Light haze in southeast
Clear and nice day
IfT lidar in Leipzig Germany has real-time data
Moderate in Midwest
Nice day
Eastern Haze
Clear day with high cirrus clouds
Haze/clouds in eastern US
Clear and sunny day
Light haze in southeast, midwest, and SoCal
Moderate AQ
Diminished haze over the Mid-Atlantic Region
Haze in the northeast/mid-Atlantic
Haze in central US and Midwest
Fires & haze in Southeast U.S.
Hazy in central U.S.
Haze in the central U.S.
Good AQ
Unhealthy AQ near Los Angeles
Eastern haze yields to late blast of winter
Hazy in the morning
Hazy ELF
Moderate in Midwest and Northeast
Baltimore Haze
Haze Building
Warming Up
Still moderate in central US
Smoke in the southeast continued
Aerosol Optical Depth Summary for 2006
Southern and central California haze
Code Yellow & Southern Plumes
Hazy upper midwest and southeast
Clear day with cirrus clouds
Smoky haze across south and midwest
Smoke in central and southern US
Southeast
Smoke in the south
A Good Day
African dust arrives in the Americas
Globetrotting (II): Haze over India
Hazy Day
Clouds and good air quality
This storm went to Cyprus
Globetrotting: A dust storm in Africa
Haze, Rising Boundary Layer and Aerosols Aloft
Smoke in the southeast
Southern Fires
Code Orange reports in NE...
Moderate in southern TX
Dust transported over the Gulf of Mexico
Close up of the dust storm
Huge Dust Storm in Texas
Don't confuse the smoke with the contrails
Smoke Plumes over Cuba and Southeast
Fires across the south
Contrails, anyone?
A Break From The Arctic Cold
Moderate in the Midwest and fires in the south
Fires continue in the South…
Moderate in the Midwest
Fires in the south
Generally a good day
A few smoke plumes in the South East
Last chance to tell us what you think!
Mostly good, a little smoky haze
Good AQ in the east
Cloudy
Moderate in central US
Code yellow reports...
Fires Continue in Florida and Gulf Coast
Smoke Plumes in Florida and Gulf Coast
Clear Day with Calipso Overpass
Good AQ in Baltimore
Clear Skies and Homogeneous Boundary Layer
smoke in the south, snow in the north
Fires in the southeast
Very clear in the East and unhealthy conditions in CA.
Unhealthy conditions in California
Western AQI
Haze in the Northeast and Southeast
Tell us what you think!
Beautiful Northwest with small plumes
Fires and small smoke plumes in the south
Poor Air Quality in UT
Clouds and Good AQI Levels
Moderate in the west
Elevated AOD near San Francisco
Haze in central California and Utah
Clear day in the morning
Code Red in Northern Utah
Haze and fires in California
Cloudy and Good to Moderate AQ in US
AQI relatively the same
Still moderate in CA
Hazy California
California continued hazy
Moderate to Unhealthy AQI in Northern CA
Cloudy except sunny California
Aerosols Aloft
California mostly Moderate AQI
Good AQ everywhere
Fires in CA
Tell us what you think!
Clouds continued
Fires in California? Elevated layer over MD?
Cloudy
Good AQI in California
Pretty Clear Day
Clean and clear
Good AQI Levels over Baltimore
Haze over the Atlantic and Good AQ in the US
Dust in the Atlantic and Smoke in Africa
Poor AQ in California
Elevated PM2.5 in CA & UT
Moderate Air Quality in Michigan
In the Clear…
Improved AQ in CA and Runoff off Louisiana Coast
Hazy in Los Angeles
Good AQI in Baltimore
Moderate in CA
Moderate AQI in the West
Good AQ in Baltimore
Moderate AQI Continues…
Moderate AQI in the Midwest
PM2.5 Increases over southern Texas and Midwest
Smoke in Louisiana
Good AQ
Clouding our view & a look back...
Snow over the Himalayas
Moderate AQ in the West
GOOD AQI
Clouds, Rain, Improved AQ over Eastern US
Clouds and snowstorms
AQ improving on Friday
Smoke plumes in the south
Haze in Upper San Joaquin Valley
A little hazy day
December Haze
Haze and the after-effects of NW storms
Light haze in Southeast
Good to Moderate AQI in East Coast and California
Is this really December?
Moderate AQI in Baltimore
Haze over the Pacific
Clear in the daytime
Moderate in Baltimore and DC
Haze off the coast of California
Improved AQ in California
Cloudy , then clear
Poor AQI in California but Clean Air over the Pacific
Poor air quality in California, poor correlation to AOD
Clear Day in the Daytime
Code Orange in CA
Conditions relatively the same
Western Air Quality
Clear Day
Fires and haze in California
It’s definitely December ....
Good AQI in the Eastern US and Runoff off LA
With cold air and storms, good air quality
Bad AQ in NJ and PA
Hazy and Cloudy
moderate AQ in Baltimore
Haze, Clouds and Moderate PM2.5
Fine PM Elevated in Midwest & Northeast
High fine particle concentrations continue in midwest
Moderate AQI in Northern Midwest
Worsened AQ and Code Red in southern CA
Smoke and fire for Thanksgiving
Smoke in Louisiana
Very good AQI in Baltimore
Smoke plumes...
Southeast haze, clouds in California
Hazy California
Clear Skies over Baltimore
Visible Haze in CA and Midwest
Storms produce good air quality but also runoff
Clouds, clouds everywhere...
Dust Storm in Texas and Mexico
Still moderate in Midwest
U.S. AQ mostly good
Clouds and good air quality
Closing the Shanghai Diary
Moderate East & CA
Moderate AQI in Baltimore MD
Hazy Midwest
Haze in Great Lakes region and Central California
Shanghai Diary (Day 4)
Cloudy Skies
Shanghai Diary (Day 3)
Haze in the northern Midwest & CA
Shanghai Diary (Day 2)
Generally good in the U.S.
Shanghai Diary
Some moderate AQI
fairly clear day
Unhealthy air in cloudy California (and Pacific Northwest)
Moderate AQ in California
Partially Cloud Capped Boundary Layer
Still Cloudy
still smoky in NW, SW, and SE
clear day
Moderate AQI in CA, MI, & OK
Lingering smoke and haze in California
Maybe so, but there's always LA
Clean cloudless sky
Smoke in the West
Smoke Aerosols off California
Fires in southern California
TodaY'S GASP west image
Leaves in mid-Atlantic
Moderate in CA
good AQI in DC
Some fires but generally good AQI....
Haze off Florida
Moderate AQI returns to MI
Fairly Quiet in the AQ Front
Fall continued...
moderate AQI in MI
Good AQ in Baltimore
Cloudy Day
Very good air quality
More on “Smoke Plumes”….
Smoke Plumes
Pretty Clear Day
Ah Fall…Breathe easy
Clear skies except northern California
Fires in the south and moderate AQI in Baltimore
Good AQ in Baltimore
It's not just Singapore....
Similar conditions….
Fires and haze in southeast
Think it is bad where you live?
Haze in South & West
Haze continues in Gulf, Texas, Southeast
Cloudy Skies over Baltimore
Hazy southeast
Haze, Inhomogeneous Boundary Layer and Calipso
Still moderate in northeast
Smoke and Haze
Moderate AQI in the East
October Haze & Smoke
Less smoke in northwest, haze in southeast
Smoking in the West
Good AQ in the East, smoke continues in the West
Hazy ELF
Smoke in California, Oregon
Calipso Overpass and High Boundary Layer
Calipso Overpass
Better AOD in CA
Good AQI Levels in Baltimore
Still smoky in CA
Fires remain in CA
Multiple large fires in California
California Fires
Summer Ends with Cloud Capped Boundary Layer
GASP-West and Smoke in the southwest
More on dust storm on CIMSS Satellite Blog
Small fires in south, smoke in southern California
Homogeneous and Cloud Capped Boundary Layer
Good AQI in Baltimore MD
Still the same
Smoke over UMBC and Calipso
Smoky/Hazy East & CA fires
Smoke east and west
Fires….
Canadian Smoke over the Great Lakes and Northeast
Baja Von Karman vortex
Jill finds a thing of beauty....
Smoke across the west, midwest, south
Better AQI in West and Midwest
Persisting haze in the north
Smoke in the West and Canada; Hazy East Coast
Hurricane Florence and eastern haze
Haze and smoke continued
Haze & Smoke
Inhomogeneous and Cloudy Boundary Layer
Lingering Smoke in the north
Blanket of Smoke over the US
Cloud Capped Boundary Layer
Smoke entering the US
Wow, smoky Northwest
Smoke coming from Canada
Haze over Atlantic; Dust Approaches U.S.
What is over Dalhousie Univ?
Ernesto Remnants & Persistent Smoke
Ernesto's rain
Good AQI in the northeast, haze in California
Good AQI in Baltimore
Moderate AQ in Maryland
Regional Haze, Fire in the West, Dust in the Gulf
Dust in the Gulf and haze in the Atlantic
Burning West
Cloudy Calipso Overpass
Western smoke
Inhomogeneous PBL, Clouds, Smoke and Calipso
Ozone Lead AQI
Pleasant Day and Cloud Capped Boundary Layer
Remaining hazy in the north
Conditions remain the same
Intense smoke continues in Northwest; Improved AQ over the East
Summer continues over much of US
Summer is not over yet!
Moderate Ozone AQ in Baltimore
Calipso Overpass
Remaining poor in southern CA
Pleasant Summer Day
Smoky in the northwest
Moderate Haze in the East & Western Fires
Smoke and fires continue in northwest
Fairly good AQI
Good AQI Levels and Calipso
Cloudy East Smoky West
Smoke and Calipso
Moderate AQ in Baltimore
Smoke in the west
Eastern Haze
Haze and alofts
Smoke dominated haze in the NW
General haze in eastern U.S. and major fires in northwest
Smoke in the West & Haze/Dust over the East
Clear Over Baltimore
Still Smoky in the west and clear in the east.
Calor, Bruma y Humedad P.2
Heat, Haze and Humidity
Large haze plumes off the East coast & Western Fires
Haze in the East and smoke in the West
Another haze report
Very Hazy And Very Hot
Hazy Northeast
A Hazy Start to August
Dust, Smoke, & Haze
A little of everything: Smoke...
... and haze and dust!
Smoke in the Central USA
Smoke in the west
25 Hour Lidar Profile
Smoke in Northwest & Eastern Haze
Haze and Clouds
Persistent Haze
Moderate PM2.5 Conditions
Cirrus Clouds
Calipso, Clouds and Alofts
Several smoke plumes….
Pretty Clear
Mostly good air quality
Improved AQ over the Eastern US
Thick Boundary Layer, Ditto
AQ remaining poor
Eastern Haze
Thick Boundary Layer
Haze and Aloft Aerosols
Still poor AQ
Ozone Code purple in DC
Action in the Nocturnal Boundary Layer
Clear Day
It's a hot one...
Poor Air Quality Expected…
Fires in Montana, Wyoming, South Dakota
Haze and smoke across U.S.
Sunny Calipso
Smokey
Smoke in West and North
Update - Morongo Valley Fires
Montana Fires
Now you're getting me mad...
Hazy ELF
Smoke in CA and AK, Haze in East
Hazy Day
Very hazy in Maryland
Hazy in Baltimore
Haze and Calipso-Aura Overpass
Moderate Air Quality
Small Contrails
OMI-Canadian smoke over eastern US
Smoke and haze on the eastern seaboard and Gulf of Mexico
Activity In The Higher Altitudes
Rising PBL and Aerosols Aloft during Calipso Overpass
Still Hazy in the East (Again)
OMI-Canadian smoke over eastern US
Aerosols Aloft
Still hazy in the East
Calipso Overpass
Smoke over the Great Lakes
Plume/clouds in northeast
A hazy and smoky 4th of July
Homogeneous Boundary Layer
More smoke expected to arrive
Canadian smoke across U.S. continued
In honor of Canada Day
Eastern USA experiencing moderate Air quality
Smoking Calipso
Smoke & Haze Continues to Move Across the East…..
OMI
Morning Residuals
Smoke & Haze
Is that smoke at 3 km in the lidar (n/t)
Partially Cloud Capped PBL
GASP Movie
Smoke in eastern US
Smoke in Canada and the North/Central US
GASP Movie
Canadian Smoke Becomes more Obvious…
Smoke continued in Canada
High Ozone levels in California
Moderate air quality in the southeast
Rainy Overpass Again
Rained Out Calipso Overpass
Modeate AQI for Eastern Half of U.S.
Still smoky in the west and hazy in the east
Residuals to 3 km
New Mexico Smoke Update
Growing Boundary Layer
Smoke in the central U.S.
Intense Haze in the Northeast
Hazy east, midwest, and southwest
Hazy East
Later the same night, er, day
Poor Ozone and the Low Level Jet
CALIPSO and Good AQI levels
Still hazy in the southeast
Haze building in Southern U.S & Streaming over Atlantic
Low, sparse cumulus clouds
Smoke in AK and hazy in Louisiana
A Ride On The A-Train
Clear Skies over Baltimore
Haze in the Gulf of Mexico
Moderate AQI in the South
Southern haze and Alberto, the first named Atlantic storm
Hazy in Louisiana
CALIPSO comes alive!
Still hazy in the east
Moderate AQI Continues...
Moderate AQI in the East
Cloudy Skies Over UMBC
Cloud Capped Boundary Layer
Moderate AQI in California and Texas
Hazy/Smoky South
A Day of Introspection
Mostly good aqi day
Possible Russian smoke in Alaska?!
haze in the east
A Hazy Start To June
The Haze Continues
still hazy in the east
Inhomogeneous PBL
Moderate AQI in the East
Memorial Day
Regional Haze
Summer-like moderate PM levels
Inhomogeneous Boundary Layer
Some haze in Southeast, a few fires in Southwest
Still hazy in southeast
Haze in the East
Still hazy in the south
Hazy south
Moderate AQI in the South
Mostly good air quality
Haze in the Southeast
Smoke plumes in the South
CA AQI & LA Fires
Moderate PM & ozone in CA
Big fire in Canada
Haze over Atlantic
Fires in Florida, smoke in the Gulf of Mexico
Moderate in CA
Smoky in FL, moderate AQ in CA
California
Rising Boundary Layer
Still smoky in the south and moderate ozone in MD
Heavy smoke over Gulf of Mexico
Smoke in Gulf
Smoke/Haze in the Southeast
Intense smoke over Gulf of Mexico
Hazy in the East and Gulf
Moderate AQI continues...
Clouds over UMBC
Moderate AQI on East Coast and South Texas
Continued Haze and Mexican smoke
Moderate day all around
Late PBL Rise
Poor AQI continues in CA
Inhomogeneous and High Boundary Layer
Haze in Lower S. Joaquin Valley
Moderate in Midwest and CA
Hazy in Southern/Central California
Aerosols and AURA
Hazy in the east
Calipso Launches!
High Boundary Layer
Good AQI
Clear, Moisture Aloft
No visible haze in the southeast
Hazy in the Southeast
Cloud Capped Boundary Layer
Hazy South & Few fires
Asian Dust over the US again?
Fires in the south, dust in northwest?
Light haze in Southeast
Hazy in California
Lidar: Plume merging with boundary layer
Dust on the Move & Good to Moderate AQI in the States
Clear Baltimore and Aerosol Sunset
Plumes Aloft
Hazy in central US
Catch the A-Train
Dust In Canada
Graduate Student "Sunphotometry"
Aerosols Aloft
Dust Size Distributions
Hazy Midwest, more dust?
Major dust storms in Asia
Possible Asian Dust
Moderate AQI in the South
Dust over Northeast?
Haze over the Atlantic
Hazy in VA and NC
Plume in the Midwest
Mixing Residuals
Midwest Smoke/Haze
Fires and Smoke in Midwest
Thinning Aerosols Aloft
Smoke travels to Northeast
Aloft Aerosols Are Still Present
More on What's Burning?….
What's burning?
The Truth Is In Lidar
Hysplit Trajectories
Haze/Smoke in Wisconsin...and also in MD?
Smoke continues in middle U.S.
Smoke in Kansas
Moderate in Baltimore
See the Indirect Effect
Few Fires
INTEX-B
Possible dust plume in California
Moderate AQI in Houston
INTEX-B
Midwest Fires & NC Haze
INTEX-B
IDEA forecasts started
Light haze in Georgia and the south, patch of smoky haze in Texas
INTEX-B
Terra/MODIS RGBs for 4/1
Fires in the Midwest and Cuba
INTEX-B
Moderate AOD in the East
INTEX-B
Light Springtime Haze
Moderate AQI in the Midwest & East
INTEX-B
High Boundary Layer
Smoke in Arkansas and Missouri
INTEX-B
Fires persist in Midwest and South
Aura Overpass + Descending Clouds
Fires in deep south
Moderate AQI in OK
INTEX-B
Lingering haze/smoke Persists in south
INTEX-B
Smoke in the south
Haze in the West?
AURA, Good AQI Levels and Mostly Clear Skies Over Baltimore
Several SE fires visible in RGB
Good AQ in Baltimore
IMPROVED AIR QUALITY IN THE SOUTHEAST
Hazy & Cloudy Southeast
INTEX-B
Mostly cloudy with some light haze
INTEX-B
Moderate AQI in Southeast
INTEX-B
Smoke in northern Florida
Fires
INTEX-B
Good AQI in Baltimore
INTEX-B
Aura + Clear Skies Over Baltimore
More on What's that in Big Bend?….
What's that in Big Bend?
Wildfires continue in TX
INTEX-B
Smoke Plume in Texas
INTEX-B:Texas
Welcome, Dr. Prados!
Good Morning Baltimore….
INTEX-B
Smoke and sand in Texas
INTEX-B
Haze in Eastern TX
Intex-b
Hazy in El Paso TX
Moderate AQI & Hazy Gulf
Cloudy Day in Lidar
Yellow to Orange AQI in Midwest
INTEX-B
INTEX-B: Project Support
Fires in the south and moderate AQI in the Midwest
More on Southeastern Haze
Southeastern Haze
Clean air in the east, moderate midwest and southern conditions
AURA OVERPASS
Fires in the Southeast
Good AQI levels over Baltimore
Smoky haze in Gulf of Mexico and the South
smoke plume in Florida
Cirrus over UMBC
Always a teaching moment
Smoke in the southeast and moderate PM2.5
Moderate AQI in Midwest, Fires in Florida
Few smoke plumes
Good air quality across U.S.
Poor air quality in California continued, especially Los Angeles
Poor air quality in California
Huge dust storm in Northern Africa
Moderate AQI in the Northeast
Moderate air pollution in midwest
Good AQI for the US
Few Smoke Plumes
Good air quality continued
Cloudy but Good AQ
Code yellow in the Northeast
Lidar vs AURA
Warm and Hazy
Warm and Hazy in the Northeast
Off To A Hazy Start
Low, Thick Boundary Layer
Moderate AQ in California and Baltimore
Bad AQI in California, Moderate in Midwest and Northeast
High PM levels continue in California
Central California haze continued
Bad Air Quality in California
Fires in the southeast
Clear and Sunny
Still Smoky in California
Bad AQI in California, good AQI in Baltimore
Frontal System & Southeastern Fires
Orange County fire
High PM2.5 in Southern California Again
Unhealthy PM2.5 levels in Southern California
High PM levels in southern California
Haze in western Texas
Cloud-Capped Boundary Layer
California haze and widespread moderate AQI
Little Haze in Baltimore
Cloudy Skies over Baltimore
Augustine's ash and Hazy El Paso
Haze in Northeast, Unhealthy AQI in Los Angeles
Light haze in Los Angeles
Unhealthy AQI in Taos, Fires in Southeast
A Little Haze at AMS
Southeastern Fires intensify
Welcome, young blogger
Clear Skies in MD & Southeast Fires
Clear Skies over Baltimore
AQI in the West
Light haze in CA and Central U.S.
Good AQI and clouds
I'll take the challenge
Winter air with a little California haze
Moderate AQI in Central CA and Midwest
Inhomoegeneous Boundary Layer
moderate AQI in Baltimore
Pretty good aqi
Good AQI
Mt St Augustine ash and good PM in Baltimore
Smoke in Florida
Chilly weather and good air
Haze at Mt. Augustine
Mt St Augustine erupting in Alaska
Good Day in MD & Haze Over Atlantic
January haze in the Nations Capital
More Aloft Aerosols
Smoke in FL and LA, moderate AQI in Baltimore
Aloft Aerosols
Light Haze….
Northeast haze
A few fires
FL fires
Smoke in Texas
Haze off the East Coast, Dust in Texas
Smoke in Florida
Still some smoke in Oklahoma
TX and OK fires
Dust storm in Texas
Light haze/smoke in South & Few FL fires
Hazy Gulf, West coast storms
Fires in the south
Some moderate air quality today
Follow-up to Amy's Post
Improved PM2.5 levels and smoke in Texas?
AQI Improvement
Still Unhealthy in MI
Fire in the Arctic?
The Industrious Grad Student
Elevated AQI in the Midwest
Oooh a problem to be solved…
Interesting plume in Lake Michigan
No extra credit?
Moderate AQ in Baltimore
Contrails, anyone?
Moderate AQI in the Midwest
Action day in Phoenix AZ
Good AQI and contrails
Mostly Good AQI
Mostly good air quality continues
Cloudy Conditions
Good Air Quality in Baltimore
Haze and low clouds in California
Conditions the same in the west
Unhealthy AQ in CA
Fires in Louisiana
Wood Burning partially the Blame…
High PM concentrations in the West
Code red in CA
Still cloudy and “unhealthy” AQI in CA
Poor AQI persists in Central CA
Code Red in Fresno and Hanford CA
Poor AQI in California
Winter storms
Light haze over the Gulf of Mexico
Code Green "Good" AQI
Cloudy in the north, fires in the south
Good and Moderate AQI in the USA
Smoke in Louisiana and Texas
Cloudy and Good Air Quality
What's left of the Sandstorm & Moderate AQI in Some States
Sandstorm Subsides…
High Resolution image of TX duststorm
Before and After
Sandstorm in Texas, Mexico, Oklahoma
AQI Improvement in CA
Fires in the East & Central US. Also Poor AQI in CA
Poor air quality in California
Smoke in Louisiana
Elevated AOD in CA and Louisiana Fires
Louisiana & Texas Smoke Plumes
A little haze east and west, Mexican smoke plumes
Many Fires scattered around the nation….
Smoke in CA and LA
Good Air Quality Day
Smoke in Arizona
USA Cloudy and high PM2.5 in California
Hazy conditions in CA
Cloudy and Inhomogeneous Boundary Layer
Hazy southern California
Fires are Burning...
Fires in Louisiana, light plume in the South
A clean clear day in Maryland
Moderate conditions in the southeast
Moderate PM2.5 in Baltimore
CA AQI
Hazy Northeast, light haze over Texas, high PM levels in California
Dust dispersing over the Gulf of Alaska
Smoke plume in central Calfornia
LA Haze
Moderate in Midwest and CA
Moderate AQI Levels in Michigan
PM2.5 code yellow and orange in California
Clear and Cirrus
Still Moderate
Mostly Moderate AQI
Clear east, lingering haze in midwest
Fires Continue….
Still smoky in the south
Conditions similar to yesterday
Smoke in south and good AQI in Baltimore
Western Haze
Few Fires, Smoke/Haze in West, & Wilma
More on West Coast fires
Fires south and west
Fires
Clouds and haze in northeast
A Cloudy Day in Maryland
Hazier than it looks
Still smoky in the south and light haze south of DC
Action Days in Texas
Fires intensify in the South & Midwest
GOOD AQI
Hello Sunshine…
Smoke in Louisiana and haze heading toward Maryland
Conditions much the same as yesterday
Still cloudy in the east fires in Louisiana
Fires in Louisiana and Arkansas
Southeast Plumes & FL Haze
Clouds and clear with good air quality
Few Smoke Plumes
Cloudy in the east
A Cloudy Day in the U.S.A.
More Evening Aerosols
Smoke in AZ and CA, haze in MI, OH and IN
Keep an eye on smoke/haze in the south
Haze in Midwest, Great Lakes, and Northeast
More On the Evening Boundary Layer
Mostly Moderate AQI
Interesting Boundary Layer After Sunset
Elevated PM in Michigan and Southwest
Some haze in the south
Smoke in CA and haze in South
Sunrise Photo
Smoke plume in Southern California
Some Clouds, Little Haze
Fire in California
Smoke in CA, Haze in South and Good AQ in MD
Very Clear Over Baltimore
West Update
Haze Along Texas/Louisiana Border
Rita's remnants
High PM2.5 in Michigan and Ohio
Rita & Northeastern Haze
Hazy in Texas
2 Years of Blogging
Some Haze and Aloft Aerosols
Haze throughout the eastern U.S. as Rita approaches
Welcome Amy!
Clear and Well Mixed PBL
Better AQ in Baltimore and smoke in LA and MS
Haze and Clouds in Lidar
GASP Animation
Smoke in Idaho
Haze in Southeast and Louisiana
Elevated PM levels in east this morning
Hazy Conditions & TS Rita
Still hazy in Florida and southern coasts
The Southeast
Still hazy in Florida
Haze continued in inland East
The East remains hazy
GASP Animation
Poor air quality in Michigan
Persisting haze in Midwest, south and northeast
GASP Anim
Haze in upper midwest, south, midAtlantic, and northwest
Haze/Smoke in the East & Midwest
Haze from west reaching Maryland
Smoky-hazy in DC-Baltimore
The LIDAR is Running Again
Smoke from Idaho getting closer to Maryland
Haze in plains, smoke in Northwest
East Special: And the Haze continues….
Checking a Yahoo News Story
East Special: Haze in the south and Midwest
East Special: Wide Spread Haze
High AOD in the Northwest
East Special: Haze over Atlantic
Smoke from Idaho
East Special: Haze southwest of Maryland
Fires in the Northwest
East Special: Hazy Southeast
East Special: Moderate in the south after Katrina
East Special: Cloudy
Idaho smoke
East Special: good AQI in East, moderate AQI in Midwest
Idaho Fires
East Special: Clouds & Light Lingering haze
Fires in MT
East Special: Katrina & Haze
Still smoky in OR and MT
East Special: still hazy
AK improving, smoke in OR and ID
East Special: very light haze
Another Clear Day
Aerosols Aloft
Tropical storm Katrina and haze in south and plains
Some Residuals, But Still Clear
Somebody is happy because.....
East Special: GOOD AQI for the Northeast & Moderate for the South
East Special: haze in southeast
Fires in Pacific Northwest and update on Alaska fires
East Special: Hazy eastern seaboard
And where would you be taking your vacation?
Shifting winds and clouds affecting smoke in Alaska
East Special: Light haze in south
Fires and smoke in Alaska continue
East Special: Cloudy in northeast and some haze in southeast
Alaska smoke
East Special: hazy in GA
Much Hazier Than Yesterday
A Clear Day in Lidar
Fires and Hazardous air in Alaska
East Special: Haze in Southeast
GASP Animation
East Special: Clouds in the North & Haze in the South
More smoke from Alaska
East special: conditions improved in northeast
Fire and smoke in Northwest U.S.
East Special: Haze continued in east
Close up of DC and Baltimore
East Special: High AOD in midAtlantic
Smoke from Alaska
East Special: Very high AOD in West Virginia and New Jersey
More smoke in Alaska
AK fires and smoke in the West
GASP MOVIE-08-11-05
East Special: Cloudy East
Fires in Washington continue
East Special: General eastern haze
Northwestern Fires
East Special: Precipitation & Haze
East Special: Cloudy East and hazy Midwest
Haze and Clouds
Big fires in Washington, Small fires in Canada
East Special: Continued central and southern haze
East Special: Dense haze in midAtlantic
Smoke in WA, ID and MT
East Special: Persisting haze
Aloft Aerosols Advecting Over UMBC
East Special: Midwest, east and southeast haze
Well Mixed Boundary Layer
East Special: Haze in southeast and midwest
East Special: Haze in the North & Clouds in the South
Gradually Clearing
Foggy Morning
Smoke plumes in TX and AR
East Special: AQI remaining moderate
East Special: Haze in northeast, dust off Florida
East Special: very hazy in southern PA
Dust detection with AIRS
Moderate AQI in CA
East Special: Clouds & Haze
East Special: Improving AQI
East Special: Haze in southeast and off east coast, dust in Gulf
East Special: HOT HOT HOT
Thick haze in the southeast
East special: Moderate PM2.5 and high ozone in MD
East Special: High Temperatures & Continued Haze
East Special: Haze & Dust
Smoke in AK and western US and African dust
East Special: still hazy in Baltimore
Moderate conditions in west and possible dust in southeast
East Special: Still hazy
Thick Residuals
Smoke in southwest and midwest
East Special: Hazy southeast
Not Very Hazy at UMBC
East Special: Haze over Atlantic
Evidence of Smoke & Haze in the West
Action days in CA, smoke from NV, AZ and UT
East special: still cloudy and hazy
East Special: Clouds and a tendril of smoke
Hazy in the Midwest and California
East Special: Cloudy
East Special: haze in the far northeast
Haze in Madison Wisconsin
East Special: hazy and cloudy Midwest and East
Smoke in Canada, Northern and Northwest U.S.
East Special: Hazy humid eastern seaboard
Probable smoke from Arizona
East Special: still smoky in northeast
Haze in Lidar
It's HAZY out there!
Aerosols Aloft
East Special: hazy conditions in NY
Haze in central US
East Special: Haze over Atlantic and midwest, fires in Canada
East Special: Regional haze as Dennis arrives
East Special: Haze Building
East special: cloudy skies and moderate AQ
A Buggy Instrument
Some Haze, Some Clouds
East Special: Eastern Haze Retreats & TS Cindy
Light smoke in NV and conditions improving in AK
East Special: cloudy East Coast
Fires remain in the West
East Special: Hazy Conditions Continue
Smoke in eastern and central Canada
East Special: Less haze
East Special: Frontal System Improving AQI
Fires remain in the West
Haze, Clearing in the Afternoon
East Special: General haze
AK and NV smoke
Midwest haze and NV smoke
Special Feature: California fires of October 2003
Midwest haze continued, major fires in the southwest
Unhealthy Air Quality in Michigan
High AOD in Midwest and AK smoke
Heavy haze in east/midwest, fires in west
Poor Air Quality in the East Coast & Midwest
Hazy in Baltimore Today
Smoke in Nevada, Arizona and Utah
Clear in Lidar
Still hazy in the south and better AQ in Baltimore
High AOD near MD, Canadian smoke in MI
Offshore Haze
Haze and Rain
Thin Boundary Layer at UMBC
Haze in east & possible smoke from small Canada fire in MI
Alaska Yukon fires again
Clouds, Inhomogenous Boundary Layer
Haze in central US
Light haze in south and midwest
Good Conditions Around the Nation
Good AQ in Baltimore, Haze in Gulf of Mexico
Another Clear Day in Lidar
Fairly Clear in Lidar
Haze off southeast coast and in south
Clearing Over UMBC
Frontal System pushing Eastern Haze over the Atlantic
More haze and clouds
Eastern Haze, Smoke Plumes, & Elevated PM
Some Haze, Some Clouds
Smoke in southern TX
A little haze, a little smoke, and a little tropical storm
Hazy Northeast
High Scattering in the Nephelometer Data
Cloudy in the east and still hazy in Baltimore
Transported Layered Haze over Baltimore
Still hazy in Midwest and Northeast
Haze Remains at UMBC
Moderate haze in northeast and midwest
Slightly Clearer, Still Hazy
Light Haze over the Midwest & East
Morning image of Downtown Baltimore
Haze in Lidar
Hazy from the North to the South
The Start of a Hazy Day
What is in the Air?
Hazy east and midwest, smoke in Canada and Mexico
Canadian Smoke streaming into the Northeast
Moderate PM2.5 in TX, better AQ in Baltimore
Little bit of smoke from Canada in Maine and elevated ozone in TX
It's Starting To Look A Lot Like Summer
Smoke in eastern Canada, summer haze in U.S.
Clear With Cululus
Possible smoke from Canada reaching U.S.
A Good Day
Haze over the Atlantic & Gulf Coast
Hazy southeast
Unhealthy Ozone in TX
Clear over UMBC
Better AQI
Haze over Eastern-Southern Texas…
Smoky haze in the Gulf and parts of Southeast
Moderate AQI Continues…..
MIDWEST
MODERATE AQI IN THE MIDWEST
Nephelomter Data
Better AQI on the East coast
AQI remaining moderate in the Midwest and southeast
Cloudy and Haze
General smoky haze
Hazy east, high smoke in west?
Clear, Cloud Capped Boundary Layer
GOOD AQI
Eastern Haze/smoke being pushed off shore
Smoky-hazy in southeast, east, and midwest
Is smoke coming from Central America?
Nephelometer Data
Haze and moderate ozone in southeast
HAZY
Increased Haze
Backward Trajectory of Plumes
Haze and Smoke
Two Plumes Over UMBC
Very Clear, One Local Source
Moderate Conditions Continue in the East
Moderate AQI for the Southeast & Midwest
Partly cloudy, partly hazy
Moderate ozone from Midwest to TX
Weekly Nephelometer Data
No major haze in US, moderate ozone in Texas
Moderate AQI
Mostly clean air
Smoke in the Southeast
Moderate AQI in MI, CA, & MD
Fires in Mexico Continued
Central American smoke & GA, FL Fires
Weekly Nephelometer Data
Tiny smoke plumes in the south
Smoke in the Gulf & Few smoke plumes
Heavy smoke in Gulf of Mexico
Good AQI in Baltimore and DC
Special Feature: California Fires in October 2004
GOOD AQI
Haze/Smoke over Atlantic and Gulf Coast
Moderate conditions in parts of the US
Today's GASP
Moderate ozone in NC and VA
GASP MOVIE
Eastern haze, Gulf smoke
GASP for the Northeast
Building Haze
High haze in East and Midwest
Haze and Clouds
MIDWEST Still Hazy
Temperatures are rising….having an effect on Air Quality
Local fires in midwest
Smoke in GA and SC
A Clear Week in Nephelometry
Clear over UMBC
Smoke in central US, ozone in southern Texas
Clear in lidar
Elevated AQI in Southern California……possibly due to dust?
Clouds over UMBC
Smoke in Gulf, low PM overall
Transported haze
Large Local Source
Smoke in Southern Florida
Moderate midwest PM, smoke in Gulf
GOOD AQI...Hazy Midwest
Ozone and dust in Texas, dust and smoke in Arizona
Building Haze in Nephelometry
Cloudy East; Relatively clear West
Starting to Haze Up
Central America Smoke & Hazy East and Midwest
Hazy midwest and south
Clear, With A Layer Aloft
Midwest Fires & LA Haze
Large smoke plume in the Midwest
Smoke in Oklahoma and Kansas
Smoke in central US due to multiple fires
Fairly Clean Air This Week
Smoke from Central America
Cirrus over UMBC
Fires are burning in the Mid-West & Southeast
Dust Storm in West TX
Very clear in lidar
Mostly GOOD AQI....Haze in Arkansas?
Moderate haze in Florida
Smoke in Gulf and southeast
UMBC Nephelomter
Still smoky in the south
Large smoke plume or dark clouds in the southeast?
Louisiana Smoke Plumes
Smoke from Central American Fires
Mostly Good AQI
Hazy/Smoky Midwest
Eastern haze, plains fires
Haze from Midwest reaching Maryland
Haze in the mid west
Smoke from Central American fires
Light haze in midwest, otherwise clear
Clear Day in MD
Smoke Plumes in Midwest & Southeast
Moderate AQI for CA and the Northeast
California haze and Oregon smoke plumes
Southern California is still very hazy
Smoke in southeast, moderate AQ in LA, Washington and Midwest
Poor AQI in California
Mt. St Helens Erupts
Storms and highs
Nations AQI & Southeastern Fires
Light Haze
Smoky southeast
EPA code red in Utah, possible moderate AQI tomorrow in Baltimore
Good AQI at Baltimore and fires in central US
Plume Aloft in Lidar
Florida Smoke Plumes & Good AQI
Clear air, a little smoke in Louisiana
Clouds and AQI in the Great Lakes & California
AQI Improvement
Elevated AQI
Increasing PM2.5 level in Los Angeles, CA
Northeast snow
Moderate AQ in Great Lakes Region, cloudy skies in the East
Haze over southeast
Haze south and north
Hazy Southeast and Florida Smoke plumes
Winter particles and southeast smoke
Haze in Southeast
Clear DC-Baltimore
Clear skies and no major haze
UMBC Nephelometer
Good air quality
No Significant Haze & Texas Smoke Plume
Moderate AQ in the Ohio Valley and Baltimore
Florida Fires
Mostly Good AQI
Southwestern storm systems & Florida Fires
UMBC Nephelometer Data
Smoky conditions in South Carolina
Back to normal in Baltimore
Moderate Air Quality in MD
It is still very hazy in Baltimore
PM2.5 concentrations in Baltimore-DC
Name That Source
Air Quality for 02/07/05
Elevated PM2.5 in the Mid-west
High PM2.5 in Michigan
Haze is still persisting in the East
This Week in Nephelometry
Midwest and western haze
AQI in California, Northeast, and Midwest
GASP AOD high
Washington-Baltimore
High PM levels in Midwest and Northeast
Clouds and winter haze
Poor AQI & Florida Smoke Plumes
Cloudy skies & Precipitation sweeps the nation
Winter clouds continued
“Unhealthy for sensitive groups” AQI in Utah
Weekly Nephelometer Data
Improved AQ in southeast but hazy conditions remain
Cloudy Conditions & Southeastern Fires
Fires in the south
Western PM
Southeastern Fires
Special Feature: The Alaska, Yukon and British Columbia Smoke across the U.S.
Moderate AQI in the West & Lousiana Smoke Plumes
Major eastern storm, some western PM
Smoky conditions in the southeast
Haze in Lakeview Oregon and fires in the South
Cold Conditions & Snow in the Northeast
Arctic cold and local PM2.5 in Idaho
Very cold
Winter
Snow and smoke
Moderate AQ in the west
Moderate AQ in the northeast and smoke in Texas
Smoke in Florida
Run off in California
Smoke in Florida, dust from Africa in the Caribbean
Moderate AQI in the north
Special Feature: Saharan Dust Reaching Florida, July 1 to 16
Still mostly cloudy
New Links
Moderate midwest PM
Cloudy, no haze
Hooray...clouds have left MD
Moderate AQI in California, Washington and Oregon
Moderate conditions in the West
Good AQI throughout the U.S.
Moderate AQI in Baltimore
Where did the sunshine go? … Clouds
Happy New Year
Moderate AQI in the East
AQI in the Midwest & Northeast
Light Haze
Midwest
Fires in the Gulf Coast
Tsunamis in the East
Midwest & CA
The Chill Continues & CA Haze
Poor AQI in West & Cold Artic Conditions
Snow
Moderate AQ in Baltimore
Smoke in Oregon
Arctic cold in east, fog in west
Cold and clear
Wide scale light haze
Generally good conditions in the East and moderate AQI in the West
Small scale
Fires in the South
Help Files
Haze in Miami
Hazy conditions near Miami, smoke in Texas and Louisiana.
Big fires in Mexico
Smoke wisps in Florida
Gulf Coast Fires
Two smoke plumes in Louisiana and Texas
Light Los Angeles haze
Understanding the images
Relatively clear east, more clouds in the West
Fairly Clear Air over UMBC
Good AQI in Baltimore
AQI has improved in California
Haze over Atlantic and Pacific
Hazy skies in CA; Good AQ elsewhere
Conditions in California are not improving, Fresno under code red
California GASP
Intense haze continued in Central California
Light midwest haze
Poor AQ in California
High winds, clear sky
Baltimore under code yellow, fires in California
Improved air quality in California
Hazefree skies and early snow
CA AQI & Cloudy Skies
Clearing in the East ? Haze & Clouds in the West
Happy Thanksgiving!
Potential Long-range transport of dust from Asia?
Unhealthy AQ in Medford Oregon
Baltimore still under moderate AQ
Improved air quality
Real-time MODIS image sources
Haze/Smoke in the West; Cloudy Midwest & East
Cloudy conditions & Improving AQI
Western smoke plumes
Smog east and west
Baltimore under moderate AQ, intense fires in the north
Increasing Haze
Moderate Air Quality in the southwest and the north
Smoke in the northern midwest
Mt St Helens' ash, moderate Air Quality in the North
Re: Algal blooms?
Algal blooms?
Algae blooms, new snow, clouds
Mostly Good AQI
Moderate AQI in Washington and California
Smoky Washington and Oregon
Elevated AQI in Washington, California & South
Fires and Haze in the southeast
Haze in Richland
Hazy Oregon and Washington
Mt St Helens' haze and poor Air Quality in central California
Update on Pacific Northwest
Hazy in the west
Clear skies in most of the Nation
Poor Air Quality in Washington near Seattle
Clouds in east, clear west, a little smoke
AQI Calculator Link
Good PM2.5 levels, Florida fires still burning
Haze/smoke in CA,MD & VA
Happy Election Day: U.S President Impact on Air quality?
Southeastern haze dissipating and improving AQI
Southeast haze moving off
Southeastern Smoke/Haze
Moderate PM2.5 levels in Southeast, Northwest and Great Lakes region
Smoke in southeast and northwest
Haze in the Southeast
PM2.5 monitoring sites in Michigan under code “orange”
PM2.5 monitoring site in Pennsylvania under code “orange”
Cloudy & Hazy in CA, Clear conditions in Central U.S., and clouds elsewhere
Storms
PM2.5 “Orange” levels in Nevada
Clouds and possible smoky haze
Significant Cloud cover & Mostly Good AQI
Still cloudy
Cloudy skies
Haze over Pacific
California Smoke
Reorganized links
California is still burning
Fires still rage in California
"All Regions" haze over the Atlantic
California
Smoke plume in California
Congrats Dr. Engel-Cox & Mostly cloudy in the East - Midwest
Dr. Jill Engel-Cox
No significant haze or fire plumes
Still mostly clear around the nation
mostly clear around the nation
Potential Haze
Tiny smoke plumes in California and Arizona
Lingering light haze in the South
Mount St Helens' steam and ashes
Mostly Moderate AQI
Southeastern haze moving northward
Fires still burning in Southeast
Mount St. Helens is Active
Farewell Jeanne, smoky conditions in the South
Haze in the Southeast & California
Smoke plume in Mississippi and Jeanne over Maryland
Haze plume over the Gulf Coast
Hurricane Jeanne Hits Florida
Smoke plume in Oregon and hurricane Jeanne approaching
Light haze mixed with clouds
Off to a hazy start in Baltimore MD
Clear skies in the west and east coasts
Increased Haze
Moderately Clear at UMBC
Mostly clear skies around the nation for the 1st day of Fall
Clear east
Elevated Aerosols in lidar
Mostly Clear Skies in the East & Midwest
Clear in lidar
Algae Blooms--Lakes and Gulf
Clear, light haze, and clouds
Southcentral haze
Mostly GOOD AQI
Northeastern haze is out
Smoke in Arizona and Louisiana while Ivan is approaching
Northeastern & Midwest Haze
Haze Remains Over the Plains…and is moving eastward
Aerosols Aloft in the Morning
Haze over the plains
Southern smoky haze
Clear Day in Lidar
Hazy/Smoky in the Gulf coast and California
Farewell Frances and clear west
Clear in the Midwest & Fires in the Gulf Coast
Hurricane Frances in the Southeast
Poor AQI in the North & Cloudy in the Southeast
Midwest haze continued
Weekend air quality forecast
Fire north of San Francisco
Haze in Chicago webcam
Very hazy midwest as Frances looms
Frances approaches the Southeast & Haze in the Midwest
Fog Early, Then Moderate Haze
Southern haze
Frances is churning, haze in Southeast, smoke in Northwest
A Clear Summer Day in Lidar
Three sites
Cold Front Moving over UMBC
Haze in the East
GOES on Gaston
Colorado Smoke Plume & Light Haze in the Southeast
Strong haze in New England
Fires in Alaska continue
Eastern haze
No major plume today either
No major haze in continental U.S. and burning fires in Alaska
The haze is still moving eastward
Alaska is still burning
Haze in the north and east
Increasing Haze
Dust storm in southwest
Hazardous air quality in Alaska
No major haze
Fairly Clear in Lidar
Little midwest haze, otherwise all clear
New link and radio story of interest
Wisp of smoke over midwest
Haze Building Up in the Evening
Haze from Canada in northern US
Haze remains over the East
Fog, Haze, and Virga
Fog in the Morning, Haze in the Afternoon
Hazy East & West
Smoke in the North, fires in the South, & Haze in the East
Very hazy in lidar
Fires & Smoke in the West; Haze in the East
Clouds and Haze
Western smoke
INTEX: A little haze, smoke, and Charley
INTEX: Here Comes Charley
Saharan dust and Charley
INTEX: Cloudy East relatively Clear West
Dust behind the Hurricane?
Bonnie and Charley take Florida by storm
INTEX: Still a hazy east
Very hazy in lidar
Haze from above
Haze and Clouds
INTEX: Hazy east
INTEX: Moderate Haze in the East
Quickly Rising Boundary Layer
INTEX: Southeast and midwest haze
INTEX: Clear skies
Low Aerosol Concentration in Lidar
INTEX: Partly Cloudy in the East
Under the Clouds
INTEX: Cloudy eastern U.S.
Here comes the Front
Hazy in lidar
INTEX: Hazy East Coast
Some smoke plumes in Louisiana
INTEX:Clouds in the East
Clouds, Clouds, and More Clouds
Tropical Storm Alex & Fires in Washington
INTEX: Cloudy and Smoky Northeast
INTEX: Smoke in midwest
INTEX: Cloudy east, smoky west
Clouding our View
INTEX: Over the Atlantic
Smoke in the Northwest
Cloudy at UMBC
INTEX: Clouds in the East
A fairly cloud free day in lidar
Hazy Columbia River
Elevated AOD above Washington State
Cloudy and moderate haze over UMBC
INTEX: Smoke in the far Northwest and Northeast
Smoke in Washington State
INTEX: More smoke coming
Smoke in the West
INTEX: Clouds in the East Smoke in the North
Haze and Clouds
Finally, A Bit of Sun
INTEX: Smoky hazy south
New Link: NCAR Real-Time Weather
INTEX: PM2.5 concentrations
INTEX: Hazy south, more smoke in north central
INTEX: Cloudy, hazy, smoky, sky in the East
Other smoke plume from Alaska and British Columbia fires possibly entering the U.S.
Cloudy in the Northeast
DC haze
INTEX: The smoke plume is still above us
Fires in the South
Heavy Aerosol Load
Very Hazy in the EAST
A Room with Very Little View
Fires in Florida and the northeast
INTEX: Smoke in the Northeast & Southeast
The End of the Smoke
UMBC LIDAR Shows that the Smoke is Still There
GASP Shows that the Yukon Plume is Still Intact
ALG Webcam…Good Morning Baltimore
Today's Smoke from the Yukon
INTEX: Alaska British Columbia fires smoke plume over eastern U.S.
Fires in California, central U.S. and the east coast
The smoke is still there, but clouds got in the way
GASP AOD Animation for the Northeast
Smoke Reaches UMBC and the REALM Network
Hazard Mapping System (HMS) Fire and Smoke Product
INTEX: Smoke Extends all the way into the South
Hazy and Cloudy in Baltimore
Smoke from AK/CA fires
Fire near Los Angeles
INTEX: Smoke in the middle U.S.
INTEX: Smoke in the midwest
INTEX: Here Comes the Smoke…Again!
INTEX: Cloudy Northeast
Smokey States in the west
Smoke News
Finally, a Clear Day
INTEX: Clouds are Still Here
Smoke & Fires
A Break in the Clouds
And the Clouds Continue
INTEX: Cloudy skies
Burning fires
Yet Another Cloudy Day for INTEX-NA
Clouds and More Clouds in Baltimore
INTEX: Cloudy in the Northeast
Clear in the West..fire in Washington
Hazy/Cloudy at UMBC
Cloudy & Rainy
INTEX: Smoke in New England, haze in south
Saharan dust in Florida and Caribbean
INTEX: Aerosols over the East
Smoke over Canada
The smoke remains over UMBC
Photo of AK smoke seen over UMBC
Smoke over UMBC
INTEX: Smoke over UMBC?
INTEX: Cloudy hazy east coast
Smoke plumes from Washington, Arizona and Canada
Clouds and moderate haze
INTEX: Smoke in southwest U.S.
UMBC Participation in the INTEX-NA Field Exercise and the DC8 Flightpath
INTEX: Partly to Mostly Cloudy in the Northeast
Haze in Southeastern Canada
Aerosols Aloft Over UMBC
Rapidly rising boundary layer
INTEX: Relatively good AQI
Hysplit Trajectory Changed
INTEX: Mostly moderate air quality
Fires in Arizona
INTEX: Rainy 4th of July
INTEX: NE, Mid-Atlantic, & Midwest
Fires in Arizona & Washington
Code Purple and Maroon AQI in Alaska
Long Range transport of smoke from the AK/BC fires
Arizona Fires
INTEX: And the Haze continues…
Hazy, but no smoke in lidar
INTEX: Building haze event
INTEX: Project Support
Western fires
Smoke free over UMBC
Lots of Aerosols in the Northeast and Midwest
No smoke in lidar
GASP AOD Animation
Alaska and British Columbia Fires Smoke Plume Passes North of Maryland
Smoke and haze
Slowly rising boundary layer
Smoke in Wisconsin and Minnesota
UMBC is an IMPROVE site!
Cloudy and Hazy in lidar
Good Morning Baltimore ? ALG webcam
Fires continue
Light haze
Western fires continue
smoke over Baltimore?
Alaska/BC fires
HMS product of intensified Alaska & British Columbia Fires
Cloudy Skies and British Columbia Fires
Hazier than yesterday in lidar
Haze above UMBC
Convecting Boundary Layer
Hazy in the Northeast & smoke in the Northwest
AQI Unhealthy (Code Red) - Bakersfield, CA
GASP for the Northeast
Off to a Hazy start
Alaska & British Columbia Fires
Northwest Fires Cont'd
Northwest Fires
Smoke in the Northwest
Smoke/Haze in the Northwest and Southeast
Southeast haze and L.A. PM cont.
Southeast haze and L.A. fog
Southern Haze mixed with high clouds
Clouds and... smoke?
Fairly Good AQI
Cloudy & Hazy in Baltimore
Cloudy and Hazy in lidar
Smoky west
Cloudy and hazy
Smoke Plume in New Mexico
S.E. haze, N.M plume, mostly clear
Georgia haze
Clear/Clouds & AZ smoke plume
Haze retreating over Atlantic, smoke in southwest
Lidar - not as hazy today
ALG WEBCAM ? Still Hazy…until this afternoon
Hazy Conditions Elsewhere & Smoke Plumes
GASP data for a gasping day
Air-Watch.net reports code orange conditions in Maryland:
Hazy in lidar; Presunrise to noon run
Cities experiencing Action days
ALG Webcam - Hazy Day!
Midwest and midAtlantic haze cont.
Midwest and midAtlantic haze
Haze in the Northeast & Midwest
Midwest haze
Cloudy east, clear west
Elevated PM2.5 in southern California
varied smoke plumes
Cloudy, but clear near the surface
New Mexico Wildfire & a Single Fire in LA
Clear/Clouds & Few Smoke Plumes
Clear, then clouds moving in
Calgary time
Webcam - Hey A Clear Day!
Very clear northeast, smoke plume in New Mexico
Faint smoke plume
New Mexico fire
Clear in the east
Clearing
Baltimore Webcam
Texas Haze
High-pressure system
Haze & Fires
Webcam 5/24/04
Fires in AZ & NM
Fairly hazy at UMBC
Continuing southeast haze
Hazy south and new GASP site
Southern Haze
Light Haze in GA
Mostly Cloudy
Light Haze West of Texas
Light haze mixed with clouds
Hazy and cloudy
Spring time series for Baltimore
SSEC Forecast Blog
Haze clearing
More Haze
Another hazy day in MD
Northeastern Haze
Where's Baltimore gone?
Moderate to high AOD in northeast
Haze in the Northeast
Moderate haze east and midwest
Continued light haze
Volcano in eastern Russia
Hazy south
Partly cloudy
A little haze, a little smoke
Fires in the South, West, and Central U.S
Fires
Varied Smoke Plumes
Fire in L.A.
Clear skies behind front
Clouds and clear
Fires in the Northwest
Clear in the Northeast
Nevada Dust Storm
Dust Storm in Nevada
Smoke in the Southwest?
very clear at umbc
Good Air Quality Conditions
East Coast Precipitation
Cloudy East, Sunny West
Irrigated fields
Same light haze, dust
Southwest Dust Storms
Cloudy to clear
Light haze
Decreasing haze, dusty west
Moderate PM across east and midwest
Sandstorm in Colorado, Nebraska, and Kansas
Light Haze in the Northeast
Haze & Smoke Plumes
Fires in South & Mid-west
Clear except two plumes
Clear
Smoke Plumes & Mostly Clear Skies
Fires in the Central US
Stormy east
Small fires in West
Haze and smoke east and west
Fires in Georgia and Northwest Florida
Early haze, then clearing
Light Haze
AOD in Maryland
Haze in Maryland
Fairly hazy at UMBC
Note on MODIS AOD in the North
Fires in the East, South, and Central US
MODIS AOD in the North
Mixed conditions
Mostly clear
Midwest fires continued
Smoke in Oklahoma and south
Light Haze & Clouds
Fires in the Central US & Gulf Coast
Partly/Mostly Cloudy
Fairly hazy at UMBC
Frontal system
Low clouds and 2 km layer
Clear skies
Mostly cloudy
Light haze and clouds
Some clouds, little aerosol
Haze
Haze to the far North and West of Maryland
thick aerosol layer
More on “Smoke in your Eyes”…
New Link and More "Smoke in your Eyes"
Possible Explanation to ?Smoke in your Eyes?
Smoke gets in your eyes
Plumes below 5 km
Gulf Coast Fires
GASP and AL fires, cont.
GASP and AL fires
Fires on Gulf Coast - GASP AOD Discussion
Cold front
Plume at 5 km
Mostly clear
Light haze
Code Red L.A.
Southern haze
Haze, Smoke Plumes, & Cloudy Skies
Volcanic ash near Puerto Rico
Smoke Plumes in the South and Mid-west
Cloudy
Haze in California
California PM2.5 map
Light haze in West
Clear in lidar
Cloudy and clear
Smoky haze across south and Atlantic
Thickening boundary layer
Fires in Midwest
Two new links
Southern Fires Cont'd
Southern Fires Intensified
Southern Smoke Plumes
Fires in the south
Low clouds
Clear east, dusty southwest, green California
Mixed weather
Mostly cloudy
Close up of Mexico sandstorm
Haze Mixed with High Clouds in the Southeast & Mexico Sandstorm
Thin high clouds over Maryland
Possible Haze
Cloudy in lidar
Thicker aerosol layer
Local pollution source
Hazy then clearing
Aerosol Plumes
Cirrus over UMBC
Poor air quality in MN and MI
Afternoon run
Clear, Snow in Carolinas
Thin clouds
Series of thin clouds
Haze in the Midwest
Fire Plumes in the Midwest
Fairly clear morning
accumulated clouds in the west & south
Unhealthy air in Utah
02/24
Todays Suominet Data
Mostly Clear Skies in Baltimore
Thin aerosol layers
Mostly clear
Fires in south and southeast
PM2.5 in northeast
Haze in midwest and east with confounding factors
"Hazy" lidar data
Big dust storm in West Texas
Pre haze ALEX and ELF data
Southern fires Intensified
Re: a question
A Question
6/18 alex data
Smoke Plumes in the South
Action Day in Utah
Mostly Haze Free
Clear skies in DC-Baltimore
Afternoon image of baltimore
Diminishing Nocturnal Boundary Layer
East Texas floods
Clear
Cloudy night
Cloudy
Mostly haze free skies over PA
Good to Moderate PM2.5 in PA-MD-DC-VA
alex shows clear skies
Clouds
NOTE
MARYLAND AIR QUALITY INDEX "GOOD"
Clear skies in Maryland
clear day in lidar
Fire plumes in Southern Florida
Low PM2.5 in Maryland
All clouds
5 Km clouds
Clear hazefree in N.E., Ice on Lake Erie
African Dust storm
Texas high clouds
Thick clouds
cloudy
Mostly Cloudy
southern smoke plumes
Light smoke in N. Carolina
Clear and cloudy
Snow and ice in East, possible dust in west Texas
Mostly hazefree
Con trails
Haze in California
Wintry Precipitation & Southern Smoke Plumes
Winter weather continues in eastern U.S.
Winter storm in eastern U.S.
Very clear in northeast
Fires across south, Ice in the Chesapeake
Photo of Baltimore
Clear and Cloudy
Midwest Haze
Fires & Haze in the South
alex and water vapor data
Clear and Cold night
More on the Haze over Texas
Texas?
Haze over Texas
High PM2.5 levels in Southern California
California haze
Precipitation east, partly cloudy west
Cloudy and Partly Cloudy
Clear and cold in East, light haze in Florida
Ground-level air clear in east, poor in Utah
Clear skies
clear alex data
Very clear elf data
ALEX data
Clear in lidar
Mostly Clear
Haze & Smoke Plumes
Haze and Partly Cloudy Skies
Unhealthy Air in Utah
Clean morning air
Hazefree skies continue
Small fires in Florida and other minor haze
Some haze and afternoon clouds
Snow and cold
Clear skies and winter storms
Light Haze
Florida Smoke Plumes & Chilly Air
Mostly Cloudy
California Air Quality
East Coast Precipitation
Very cloudy
01/04/2004
Mostly cloudy
Cloudy
Cloudy mix
PM2.5 Data from EPA AirNow
Cloudy and clear
Clear in east and middle U.S.
Western storms
Light haze in Midwest
Haze in various portions of U.S.
Request
Dust continued in Southwest
Dust in the Southwest U.S. and northern Mexico
Stormy east
Light haze in east, Otherwise clear
Continued clear
Clear
Clear, dust, fires...
All Clear
Louisiana & Texas
Haze & Precipitation
Clouds and clear skies
Light DC haze
NOAA images of the Texas dust storm
Dust storm in Texas
Big winter storm continues
Big winter storm
Haze and clouds
Light haze in Midwest, Clouds elsewhere
Mostly Clear Skies
12/10
Thick clouds
Midwest Haze
12/8 Cirrus
Haze in south and Midwest
ELF and MODIS agreement
Clear skies over Baltimore
Clear day in lidar
Round Two
East Coast - winter weather
Wintry precipitation
Clear
GA fire intensity increased
Clear in Baltimore - Few Fires in Florida and Georgia
Baltimore 12/1
Lidar Data 12/1
Haze Free Skies
Chilly Weather
Precipitation in the East
Lingering Haze
Cool and Crisp
Clear in East, Haze in Central California
Image of Baltimore
Cirrus over Baltimore
Small fire in Louisiana, Otherwise little haze
Clear with central storms
Clear and cloudy, interesting cloud mix
Clear skys over Baltimore
Clear Baltimore
Mostly Clear Skies
Clear skies, Algae bloom in Great Lakes
Clear Afternoon
Clear Baltimore Morning
Major High and Low Pressure systems
Cloudy or clear
Light haze
SeaWiFS climatologies
Light haze in central California and Nevada
Mostly clear
Clear image of Baltimore
11/14 Lidar Data
Fire in SE Texas
Smoky haze in Southeastern Washington
Windy/clear in the East, Light haze in Washington State
Two MODIS AOD examples and discussion
Light haze in several locations
Clear in East, Haze in parts of Western U.S.
Light regional haze in the southern U.S.
Light haze in Southeast, Snow in North with Anomaly in AOD
Haze Continues in Louisiana, Clear Elsewhere
Haze in South
Eastern clouds, Very little haze nationwide
Oct 28 GLAS Image on Earth Observatory
Mostly cloudy
Mostly clear
Image of baltimore
Clear in lidar 11/04
Contrails/Haze off NE coast, Clear in Mid-Atlantic
D.C. Smog
Agreement with Aeronet
Image of Baltimore 11/03
lidar data 11/03
Contrails and Haze in Northeast
Light Haze
Angstrom Exponent Images for the Northeast
AOD High over Maine
Lidar Data 10/31
Baltimore Afternoon Haze
Smoke in Northeast
Brown cast to clouds
Baltimore Haze
Hysplit Results for smoke in Nebraska
California smoke in Midwest
Lidar Data
AIRS and LA Fires
Smoke arrives in the southeast?
Lidar Data 10/28
ASTER Image of California Fire
California smoke moves east
California burns
AOD of the Southern California fires
Cloudy East, Fires in Southwest
Patchy clouds, no haze in most of U.S., Smoke still in L.A.
Mostly clear in Mid-Atlantic, Big fire in Los Angeles
Lidar Data 10/24
The boss is happy
Cloudy Mid-Atlantic, Hazy Illinois and Indiana
Cloudy in Mid-Atlantic, Fires continue in Southeast
Fires in southeast
Haze in the southeast
No haze in the east except far southeast
Local haze but overall clear
No haze
Freaking clear
Really clear
Clear, Local haze
View over Columbus, Ohio
Clear in lidar
All clear across the U.S.
Hysplit results for Oct 12 2003 - 0 UTC
High optical depth, local source
Beautiful and clear
Still cloudy, Hazy in Canada
Continued cloudy
Cloudy
Fog over the Potomac and Chesapeake
Sun photometer
Nocturnal boundary layer formation
Hazy Day in DC
Haze in Mid-Atlantic
Increasing optical depth
Haze arriving in Mid-Atlantic
Haze building in Midwest
MOD04
Still clear
Clear
All clear
The South is burning
Small fires in southern Virginia
All Clear but Fire in Arizona
Texas and Southern Haze
Haze Clearing
Haze in Mid-Atlantic and Southeast
Haze in Missouri and Arkansas
Sediment in Potomac and Chesapeake
Clean Day in Baltimore/DC