The National Weather Service issued a weather alert at 6:21 a.m. on Wednesday for dense fog until 8:30 a.m. for Westmoreland ...

The National Weather Service issued a report at 6:10 a.m. on Wednesday for dense fog until 8:30 a.m. for Northern Erie and ...

Philadelphia tied a heat record Tuesday with another day of extreme heat on tap for Wednesday, with added humidity that will ...

The National Weather Service has issued a heat advisory for South-Central Pennsylvania on Tuesday and Wednesday. The heat ...

Residents in the Southeast U.S. are no strangers to heat in the summertime. But this week’s sweltering hot weather set at ...

Strong storms that brought hurricane-force winds to an area stretching from the Upper Plains to the Midwest have been preliminarily classified by the National Weather Service as a derecho, defined ...

The National Weather Service reported an air quality alert at 3:45 p.m. on Tuesday in effect Wednesday for Berks, Lehigh and Northampton counties.

New York State issued an air quality health advisory for Tuesday and Wednesday, with ozone the pollutant of concern.

Viewers will find three active meteor showers from late July into mid August according to the American Meteor Society.

Public health experts advise people to drink plenty of fluids, stay out of the sun, and check up on relatives and neighbors ...