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

Moderate PM2.5 AQI (top left image) levels experienced today in Oklahoma, Iowa, Wisconsin, Minnesota and western Illinois were due to a strong overnight temperature inversion caused by the surface high-pressure system, (top right image, Google Earth overlay of “true” color…

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Moderate AQI in Central US and Air Quality Advisory Day in Minnesota

Today, not much activity in the air quality conditions over the country (left). As it is shown in the AQI animation image, courtesy of Airnow, most of the country read good AQI levels. Only few states reached moderate levels and…

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Good Air quality over the country

Air Quality for Washington and Oregon (shown in the regional AQI animation (left image courtesy of Airnow) improved in the northwestern United States as a Pacific storm system moved through the region. In the Ohio River Valley improvement in the…

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Air Quality Improves in the Pacific Northwest and Ohio River Valley

Air quality was generally Code Green (Good) across the nation today, as shown by the loop of PM2.5 AQI values (below on left, courtesy of AIRNow). The exception was the Ohio River Valley and parts of the Pacific Northwest, where…

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Moderate PM2.5 Air Quality in the Ohio River Valley and Pacific Northwest