The somewhat cooler and drier start to the week is over, and the muggy air is now making a not-so-subtle return.High pressure ...

Heat and humidity return to Philadelphia area, pop-up storms possible mid-week. See the weather forecast. A fter a relatively ...

Philadelphia is under a Heat Advisory with a heat index up to 104 degrees; residents advised to stay cool and hydrated.

The advisory was active for Western Chester, Eastern Chester, Western Montgomery, Eastern Montgomery, Upper Bucks and Lower ...

It's another gorgeous summer day in the Philadelphia region with seasonably hot temperatures and relatively low humidity. We ...

Possible record-breaking heat is on tap for the Philadelphia area for the next two days, with added humidity that will make conditions feel much warmer.

The advisory states that heat index values in the triple digits are expected and a code orange air quality alert has been ...

On Monday at 2:25 p.m. an updated heat advisory was released by the National Weather Service in effect until Wednesday at 8 p.m. for Western Montgomery, Eastern Montgomery, Upper Bucks and Lower Bucks ...

Much of the U.S. is under extreme heat warnings or advisories while New York, Philadelphia and Washington DC could feel like 100 degrees or more.

How hot will it get as the humidity builds and a heat dome spreads toward the Northeast? What is a heat dome? Here's what to ...

The mugginess, along with the attendant downpours, has been related to a traffic jam in the atmosphere and above-normal sea-surface temperatures in the Gulf and the Atlantic, said Art DeGaetano, ...