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

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

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 ...

At 3:45 p.m. on Tuesday, the National Weather Service reported an updated air quality alert in effect until Thursday at ...

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 has issued a code yellow air quality alert on Wednesday due to the smoke with the potential to worsen over the coming days. As the smoke continues to … Read More The post Air ...

The Philadelphia area, South Jersey and the Lehigh Valley will experience unhealthy air quality for sensitive groups on Wednesday, according to officials.

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

Philadelphia residents are tracking air quality and pollution from their rowhouses in real time. With the fate of EPA regulations uncertain, advocates say local environmental protection efforts, like ...

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 ...