April 12, 2018

PM 2.5 levels rise in the Pacific Southwest

Air quality levels were not very good today, as PM 2.5 levels rose to Code Purple (Very Unhealthy) levels in the Pacific Southwest, along with Code Orange and Code Yellow (Unsafe for Sensitive Groups, Moderate, respectively), (AirNow, top left). There was also a good amount of Code Yellow seen in the Plains States, the Mississippi Valley, the Mid-Atlantic, and the Northeast. This elevated PM 2.5 was due to smoke in these areas from wildfires. A map of the smoke coverage can be seen in the NOAA's smoke map, top right. The smoke was also captured in NASA's MODIS Terra images, bottom left. Ozone levels were also somewhat bad, as there was widespread Code Yellow ozone across the nation, as seen in AirNow's ozone map, bottom right.

Posted by mglover at April 12, 2018 10:12 PM
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