Air quality was Code Green (Good) across most of the country today, with only a few scattered locations of Code Yellow (Moderate) PM2.5 and ozone, as shown by the loops of AQI values (below). A strong high pressure system extending…

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A Beautiful Day with Good Air Quality

Today’s air quality was very similar to yesterday’s, as seen in the loops of PM2.5 and ozone AQI values (below). Conditions persisted in the Code Green (Good) range, except for a few areas of Code Yellow (Moderate) PM2.5 in the…

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Mostly Good Air Quality; Stationary Front and Rain Persist in Eastern U.S.

It’s been a quiet day for air quality across the nation today, with both PM2.5 and ozone mostly in the Code Green (Good) range, as shown by the loops of AQI values (below). There were only a few scattered areas…

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Another Day of Mostly Good Air Quality across the Nation