Washington, D.C., and the surrounding area were placed under a “Code Red” air quality alert on Sunday after a record-breaking ...
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 ...
Washington's air quality entered the unhealthy range after a record Independence Day fireworks display released large amounts ...
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