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

Heat alerts will be in effect across the Philadelphia region starting Sunday as Saturday kicks off a multi-day heat wave.

More than 150 million Americans are under the highest level extreme heat alerts during a wave of above-average temperatures.

Millions and millions of Americans are being warned of "dangerous" heat in more than a dozen states as the summer 2025 season ...

An updated heat advisory was issued by the National Weather Service on Tuesday at 2:38 p.m. valid from Wednesday 11 a.m.

Philadelphia's National Weather Service issues heat advisory with high heat index values, advising precautions against ...

An extreme heat warning was issued by the National Weather Service in Mount Holly at 11:03 a.m. on Monday, June 23.

Like water ice and mosquitoes, heat advisories are staples of the meteorological summer in the Philly region, and another one ...

A heat advisory has been issued along the I-95 corridor for Thursday, with the heat index expected to reach 99 degrees.

Much of the Midstate of Pennsylvania is under an Extreme Heat Warning, a first for the region. Sort of. The National Weather ...

The criteria to issue a heat advisory, excessive heat watch and excessive heat warning is not clear-cut in NJ. Here's maps, ...