July 20, 2017

High Ozone comes form High Temperatures

Air quality today mostly stayed in the Code Yellow (Moderate) levels of PM 2.5 today across the nation. However, these elevated levels of PM 2.5 were mostly only seen in the Mississippi Valley, the Great Lakes region, the Mid-Atlantic, and the Southeast, as seen in AirNow's PM 2.5 map, top left. The amount of PM 2.5 was not very much affected by the smoke seen in the Northern parts of the nation, as seen in NOAA's HMS map, top right. The smoke seems to be coming from ongoing wildfires in Canada and California, but it has not changed the amount of PM 2.5 in the US too much. For ozone, there were Code Yellow and Code Orange (Unsafe for Sensitive Groups) levels seen in most of the nation, mostly concentrated in the East coast, the West coast, and the Rocky Mountain States(AirNow, bottom left). There was also some Code Red (Unsafe) seen in California. These high levels of ozone were mostly due to high summer temperatures across the nation, as seen in NOAA's temperature map, bottom right.

Posted by mglover at July 20, 2017 9:30 PM
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