Washington records world’s worst air quality for a city after over 850,000 Fourth of July fireworks

Washington D.C. recorded the world's worst air quality for a city after its Fourth of July fireworks display, with particulate matter concentrations rising significantly. This event, which occurred amidst the Trump administration's rollback of pollution controls, prompted a Code Red alert and health warnings for residents.
Fireworks burst in Washington DC to celebrate America’s 250th anniversary. Fireworks burst in Washington DC to celebrate America’s 250th anniversary. Washington DC Washington records world’s worst air quality for a city after over 850,000 Fourth of July fireworks Hourly concentrations of particulate matter rose to 6.7 times their pre-fireworks levels, according to an analysis
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