Washington records world’s worst air quality for a city after over 850,000 Fourth of July fireworks
- Posted on July 7, 2026
- By The Guardian
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- 1 min read
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
