D.C. issued the "Code Red" air quality alert on Sunday morning, hours after the record-setting fireworks display on the ...

Residents of Washington, DC, on Sunday briefly experienced the worst air quality of any major city in the world, according to ...

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.

D.C. residents found themselves stuck inside, fearing for their health and safety, following Donald Trump's massive display ...

(CNN) — Residents of Washington, DC, on Sunday briefly experienced the worst air quality of any major city in the world, according to a company that ranks pollution globally, as the capital reckoned ...