January 3, 2019

Moderate PM 2.5 along West Coast

Air quality today was mostly good, with only some Code Yellow (Moderate) levels of PM 2.5 being seen in the Pacific Southwest, the Pacific Northwest, the Rocky Mountain States, and the Rocky Mountain States, as seen in AirNow's PM 2.5 map, top left. This PM 2.5 may have been partially due to smoke coming from Central America, which then travelled North towards the West coast (NOAA, top right). Light plumes of this smoke can be seen in NASA's MODIS Terra images, bottom left. The increase in fires being burned in people's homes during the winter months may have also increased the amount of smoke seen.

Posted by mglover at January 3, 2019 10:26 PM

Very helpful information.Mountaineers who wish to climb Rocky mountain should be alert.


Posted by: Tony Thomas at January 18, 2019 7:28 AM
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