Sources

11 Total Sources

D.C. Fireworks Sent PM2.5 Above 6 Times Normal After 850,000-Pyrotechnic Show

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The New York Times128d ago

Nation's 250th Celebration Fireworks Cause D.C. Air Pollution Spike

The Washington Post129d ago

D.C. Air Quality "Very Unhealthy" for 10+ Hours After Freedom 250 Fireworks

USA TODAY131d ago

Colossal fireworks show lights up DC after Trump's USA 250 speech

D.C. Faces "Very Unhealthy" Air Quality, "Code Purple" Alert After Independence Day Fireworks

America's biggest fireworks show could bring DCs worst fireworks air quality in years

DC News Now | Washington, DC131d ago

Air quality DC and Air Quality Index: What it is, the levels and how you can check it

Washington, DC Faces "Code Red" Air Quality After Massive Fourth of July Fireworks

The Guardian128d ago

Washington DC Records World's Worst Air Quality Post-850,000 Fourth of July Fireworks Display

CBS New York130d ago

D.C. Air Quality "Very Unhealthy" After July 4th Fireworks, Ranks Sixth Globally

Smog Chokes Washington After Massive July 4 Fireworks Display, Triggers Health Concern | Videos | World News - News18

KUOW News and Information131d ago

KUOW - Washington's July 4 parade is off. The fireworks are still on