October 5, 2017

Low Ozone and Moderate PM 2.5

Air quality today was not too bad, with mostly Code Yellow (Moderate) levels of PM 2.5 being seen in the Pacific Southwest, the Pacific Northwest, and some parts of the Mississippi Valley (AirNow, top left). These elevated levels of Pm 2.5 were due to scattered amounts of smoke coverage in these areas, as seen in NOAA's HMS map, top right. Some of the smoke could be seen in NASA's MODIS Terra images mixed in with very light cloud coverage, bottom left. Ozone was also pretty low today, as it usually is in the autumnal months. Only some Code Yellow levels of ozone were found in the Mississippi Valley and the Southwest, along with some Code Orange (Unsafe for Sensitive Groups) levels in Southern California (AirNow, bottom right).

Posted by mglover at October 5, 2017 9:07 PM
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