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

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

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

An air quality alert was in effect for a section of Vineland, New Jersey, Sunday after crews worked overnight to extinguish a ...

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

A Code Orange Air Quality alert will be in effect for Philly, Bucks, Montgomery, Chester and Delaware Counties2, 2025.

Once the Philadelphia region gets past the heat wave, unstable air returns, and the storm door will open through the weekend.

Extreme heat is making air pollution worse, scientists say. And President Trump’s regulatory rollbacks could drive air ...

A code orange alert has been issued for the Lehigh Valley and eastern Pennsylvania on Monday due to elevated ozone levels as ...

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 ...