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Code Red, air quality and Maryland
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DC, Northern Virginia, Maryland air quality at Code Red Saturday: When will wildfire smoke clear?
Air quality in D.C. and Northern Virginia remained at the unhealthy Code Red level Saturday.
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What is Code Purple? See air quality map for Pennsylvania
The Pennsylvania Department of Environmental Protection has declared a Code Purple Air Quality Alert across the commonwealth for Friday, July 17.
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Canadian wildfire smoke triggers Code Purple alert in Pittsburgh
All residents should avoid long or intense outdoor activities during Code Purple alerts, per DEP.
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