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DC Air Turns Unhealthy After 850k Fireworks, PM2.5 Sixfold

7/10/2026

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Summary

Story summary

Washington, D.C. recorded “unhealthy” air after Freedom 250 fireworks, with PM 2.5 over six times normal for five hours.
Roughly 850,000 pyrotechnics were launched, causing two Mall sensors to reach “very unhealthy” and 25 of 26 city sensors to exceed the EPA “unhealthy” threshold.
The National Park Service warned of “hazardous” air near the Mall and very unhealthy conditions downtown and Arlington, while officials did not release estimates.

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Story summary

Washington, D.C. recorded “unhealthy” air after Freedom 250 fireworks, with PM 2.5 over six times normal for five hours.
Roughly 850,000 pyrotechnics were launched, causing two Mall sensors to reach “very unhealthy” and 25 of 26 city sensors to exceed the EPA “unhealthy” threshold.
The National Park Service warned of “hazardous” air near the Mall and very unhealthy conditions downtown and Arlington, while officials did not release estimates.