March 15, 2018

Wildfires in plains States lead to slightly elevated PM 2.5

Air quality mostly stayed in Code Yellow (Moderate) levels of PM 2.5 today, with a large amount of Code Yellow appearing in the Plains States, the Mississippi Valley, parts of the Rocky Mountain states, and the Southeast(AirNow, top left). There was also some Code Orange (Unhealthy for Sensitive Groups) seen in the mid Plains States, as well as in California. This elevated PM 2.5 was most likely due to smoke from wildfires in this area, with light plumes of smoke spreading across the Plains States and the Mississippi Valley, NOAA, top right. Ozone levels were much lower, with only small amounts of Code Yellow seen in the mid Plains states and the Southeast (weather.gov, bottom left). The lower levels of ozone were most likely to low temperatures in most of the nation, as seen in weather.gov's temperature map, bottom right.

Posted by mglover at March 15, 2018 10:51 PM
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