Smoke from record DC fireworks show triggered 'code red' air-quality alert

Washington, D.C., and the surrounding area were placed under a “Code Red” air quality alert on Sunday after a record-breaking ...

DC experiences ‘Code Red’ air quality after massive fireworks display

Residents of Washington, DC, on Sunday briefly experienced the worst air quality of any major city in the world, according to ...

DC fireworks show led to ‘Code Red’ air quality alert around nation’s capital

D.C. issued the "Code Red" air quality alert on Sunday morning, hours after the record-setting fireworks display on the ...

Patch AM: What did DC’s 'code red' air alert mean for your weekend?

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Allegheny County activates Code Red heat advisory for extreme temperatures

Allegheny County has activated a Code Red heat advisory for the beginning of next week, as meteorologists forecast ...