It was Code Green (Good) air quality from coast to coast today, with only a few scattered areas of Code Yellow (Moderate) conditions. Today’s Terra MODIS true color image, overlaid with AQI values (below on upper left) shows the widespread…

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Another Good Air Quality Day; Fire Activity Picks up in Central America

Good air quality conditions were reported throughout the nation today. Code Yellow (Moderate) PM2.5 levels (top left, courtesy AIRNow) were experienced in only a couple areas of the nation today. The only area to experience Code Orange (Unhealthy for Sensitive…

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Good Air Quality Throughout Nation, Fires in South

Moderate PM2.5 concentrations (Code Yellow) were recorded in Utah, California, Arizona, Colorado, Ohio, Pennsylvania, Indiana, Maryland, New York, New Jersey and the states in the New England region. Air quality after 2:00 pm EST improved along the eastern US as…

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Code Yellow in the Northeast and Agricultural Fires in Southeastern US

Today, much of the Mid West experienced Code Yellow (Moderate) PM2.5 levels (top left, courtesy AIRNow), with some areas in Minnesota, Iowa, Illinois, Indiana experiencing Code Orange (Unhealthy for Sensitive Groups) PM2.5 levels. Air Quality Action Days were declared in…

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Code Orange in Mid West Due To Factors Limiting the Dispersion of Pollutants

Areas of Code Yellow (Moderate) PM2.5 air quality continued in the Mid-Atlantic and Ohio River Valley regions today, while conditions were generally in the Code Green (Good) range elsewhere, as shown in the loop of PM2.5 AQI values (below on…

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Isolated Code Yellow PM2.5 Air Quality Conditions Continue