Sunday will be hot and humid with hazy skies and highs in the upper 90s before dropping to the low 80s by nightfall.

Good Wednesday, everyone — outside today, you will likely notice the heat cranking up in the Philadelphia region. Both Wednesday and Thursday will be very warm and humid, with highs in the upper ...

On Saturday at 3:45 p.m. an air quality alert was reported by the National Weather Service in effect until Monday at midnight ...

There is an air quality alert for sensitive groups in our area, due to the ozone level, rather than the Canadian wildfire smoke. 24/7 Live Philadelphia Pennsylvania New Jersey Delaware Welcome, Mickey ...

Philadelphia is under an extreme heat warning with heat index values up to 105 degrees, advising residents to stay cool and ...

HARRISBURG, Pa. - The Pennsylvania Department of Environmental Protection (DEP) has declared a Code Orange Air Quality Action Day for ozone for Sunday June 22, in Philadelphia, Bucks, Montgomery ...

An air-quality alert was issued in Philadelphia and its surrounding counties Wednesday, and a Code Orange advisory is expected again Thursday as smoke from Canadian wildfires has moved south. The ...

Philadelphia hit by extreme heat warning with heat index reaching 109 degrees and an advisory on poor air quality.

Heat waves are primarily caused by high-pressure systems that push warm air down onto an area and hold it there. During heat ...

A new tool seeks to change that. It provides real-time air quality data from four stations located atop buildings in ...

An intense and nearly historic weather pattern is cooking much of America under a dangerous heat dome this week with ...

On Sunday at 3:45 p.m. an air quality alert was reported by the National Weather Service in effect until Tuesday at midnight ...