The Pennsylvania Department of environmental Protection issued a Code Purple Air Quality Alert. Here's what it means for ...

A maroon Air Quality Index indicates a health warning of emergency conditions, as everyone is likely to be affected.

Wildfire smoke from Canada is creating dangerous air quality across the DMV, with D.C. monitors showing Code Purple ...

Wildfire smoke from Canada and Minnesota has led to a Code Purple alert for Pennsylvania on July 17. See the air quality map.

Maryland is under a Code Red air quality alert as wildfire smoke moves into the region, with Code Purple conditions expected in Western Maryland and unhealthy air forecast through much of Saturday.

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A "Code Purple" alert is the second-highest level of the Air Quality Index and signifies a "very unhealthy" level of air ...

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The Pennsylvania Department of Environmental Protection has declared a statewide Code Purple air quality alert for ...

The air quality in Lancaster County and the rest of Pennsylvania is “very unhealthy” as the entire state approaches the most ...