August 2, 2018

Ozone levels rise with high summer temperatures

Air quality levels today were not good, as PM 2.5 levels reached Code Purple (Very Unhealthy) levels along the west coast (AirNow, top left). There were also a large amount of Code Red (Unsafe) and Code Orange (Unsafe for Sensitive Groups) levels of PM 2.5 seen in California, Oregon, and Nevada. There were also Code Yellow (Moderate) levels of PM 2.5 seen in the Pacific Southwest, the Pacific Northwest, the Rocky Mountain States, the Great Lakes region, and the Mississippi Valley. This increase of PM 2.5 was somewhat due to smoke spread in this area, as seen in NOAA's HMS map, top right. Ozone levels were more widespread, with ozone levels reaching Code Yellow levels in the Pacific Southwest, the Plains States, the Mississippi, the Great Lakes region, and the Rocky Mountain States. There was also some Code Orange in California, as seen in's ozone map, bottom left. This rise in ozone was most likely due to increases in temperature, as these areas mostly had high temperatures of 90 to 110 degrees Fahrenheit, as seen in's temperature map, bottom right.

Posted by mglover at August 2, 2018 9:31 PM
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