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

Maryland is under a Code Red air quality alert as wildfire smoke moves into the region, with Code Purple conditions expected ...

Pittsburgh was under a Code Purple due to very unhealthy air quality on July 17.

Maryland is under a Code Purple air quality alert today, as smoke from several Canadian wildfires creates hazy and unhealthy ...

Pennsylvania is under a statewide Code Purple air quality alert on Friday because of smoke from the wildfires in Canada and ...

The air quality will get worse before it gets better for most of Pennsylvania as smoke from Canadian wildfires continues to ...

The Pennsylvania Department of Environmental Protection (DEP) has declared a Code Purple Air Quality Alert for particulate matter (PM2.5) for Thursday for Northwest Pennsylvania, including Warren ...

What are "Code Red" and "Code Purple" air quality alerts? The Air Quality Index has six color-coded categories, ranging from ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. If you haven’t paid ...

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