January 21, 2007
Hazy California
Similar conditions today as yesterday, with cloudy skies and mostly good air quality in the U.S, except California. Haze was visible in the San Joaquin valley (MODIS Aqua image left) and fine particle concentrations were moderate to unhealthy (AirNow data right). (Update: The MODIS Terra overpass (3 hours earlier) found much hazier conditions.)
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