The Pennsylvania Department of Environmental Protection declared a Code Orange Air Quality Action Day for Wednesday, due to ...

The heat and humidity mixed with smoke resulted in a "code orange" alert for Philly and its suburban counties.

A Heat Advisory and Code Orange Air Quality Alert are in effect Wednesday for the Washington, D.C. metro area as temperatures ...

Orange County Coast and San Diego County Coastal Areas are the focus of a special weather statement issued at 9:13 p.m. on Tuesday by the National Weather Service. The alert is in effect until ...

DC's air quality is Code Orange, making it unhealthy for sensitive groups. Find out how to protect yourself as conditions ...

Wildfire smoke pouring into the state from Canadian fires has triggered a red air quality alert, signaling that the air is ...

Arlington and the D.C. area is getting a dual whammy of dangerous heat and poor air quality today. A Heat Advisory is in ...