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

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

Smoke from the Canadian wildfires​ will be visible in the Philadelphia area, but no major impacts on air quality are expected ...

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

Heat, still air lead to air quality alert in Philadelphia Wednesday | NEXT Weather 03:32. Good Wednesday, everyone — outside today, you will likely notice the heat cranking up in the ...

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

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

Millions of Americans in the Northeast are being advised to avoid strenuous physical activity outdoors due to unhealthy air ...

The official temperature in Philly hit 99 degrees late Monday afternoon, setting a record for the date. At one point it felt ...

Pennsylvania faces unhealthy ozone levels due to stagnant air and high temps. Sensitive groups should limit outdoor ...

People in Lancaster County are among those being advised to limit outdoor activity today after the state Department of ...

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 ...