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

Wildfire smoke was helping raise ozone to hazardous levels. No alerts have been issued, but the air quality may approach “code orange” levels again late Thursday afternoon in parts of the region, as ...

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 ...

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

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 ...

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 ...

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

More rain is expected on Sunday along with air quality concerns from a large wildfire burning in a New Jersey state forest.

The Philadelphia nonprofit Clean Air Council was granted $500,000 in 2023 to monitor and track the Delaware City Refinery’s emission of air pollutants, but the Environmental Protection Agency ...

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