July 26, 2018

PM 2.5 and Ozone levels increase

PM 2.5 levels today ranged from Code Yellow (Moderate) to Code Red (Unsafe) levels. The PM 2.5 spanned from the West coast, the Plains States, the Mississippi Valley, and some of the East coast (AirNow, top left). The increased amount of PM 2.5 was mostly caused by smoke being spread from the western part of the nation. The smoke's coverage can be seen in NASA's HMS map, bottom left. NASA's MODIS Terra images were unable to take pictures of the smoke in this area. Ozone levels also reached Code Red levels in California today, and in the Northern part of Texas (weather.gov, bottom left). There were also widespread amounts of Code Yellow seen in the Pacific Southwest, the Pacific Northwest, the Southern Plains States, and the Mississippi Valley.

Posted by mglover at July 26, 2018 9:21 PM
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