The Fourth of July fireworks display in the capital impacted the amount of fine particulate matter in the atmosphere.
Residents of Washington, DC, on Sunday briefly experienced the worst air quality of any major city in the world, according to ...
D.C. issued the "Code Red" air quality alert on Sunday morning, hours after the record-setting fireworks display on the ...
Washington, D.C., and the surrounding area were placed under a “Code Red” air quality alert on Sunday after a record-breaking ...
An air quality alert has been issued for the D.C. area by the Metropolitan Washington Council of Governments and District ...
A Code Purple air quality reading means the air is very unhealthy for everyone.
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