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

The atmosphere is brewing a variety of water vapor perhaps strong enough to make it feel like it’s in the mid- to upper 90s, said Joe DeSilva, meteorologist with the National Weather Service. Plus, ...

The heat index will soar above 100 degrees early next week. Older adults, people with heart issues and those without A/C are ...

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.

As we approach the first official day of summer in the Delaware Valley on Friday, temperatures and conditions will combine to make us quickly forget the cool conditions we’ve been experiencing.