Washington, D.C.’s air quality dropped to an “F” grade in a new air quality report. The new grade is lower than last year’s ...

WASHINGTON — Air quality in the D.C. metro area has gotten worse, the American Lung Association said. In this year's "State ...

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State of the Air” report found that the air quality in the region has dropped from a “C” grade in pollution in 2024 to an “F” ...

A new study has found a direct link between early-life exposure to ground-level ozone and asthma or wheezing in young children.