Washington records world’s worst air quality for a city after over 850,000 Fourth of July fireworks
Summary
Washington DC experienced the worst air quality of any major city in the world for a short time after a large Fourth of July fireworks show. The event included over 850,000 fireworks and caused harmful air pollution levels that lasted several hours, prompting health warnings from city officials.Key Facts
- The Fourth of July fireworks in Washington DC lasted 40 minutes and launched more than 850,000 fireworks from 10 sites.
- Air pollution from the fireworks caused particulate matter to rise 6.7 times above normal levels.
- All 26 air sensors in the city recorded air quality levels considered "unhealthy for sensitive groups" by the EPA.
- Pollution peaked about five hours after the show ended and stayed high for around five more hours.
- The south-west part of DC had the highest pollution levels, near one of the fireworks launch areas.
- The poor air quality likely spread to nearby Arlington, Virginia, though there were no sensors there to confirm.
- Thunderstorms on Sunday evening helped clear the polluted air, preventing an even worse situation.
- The fireworks were organized by Freedom 250, a non-profit supported by President Donald Trump, to celebrate America's 250th anniversary.
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