Temperatures won't reach the record-breaking mark they did on Tuesday in Philadelphia, but a third straight day in the 90s ...

With the first official 100-degree reading in 13 years on Tuesday, Philadelphia broke a 100-year-old record for a daily high-temperature. And another might fall Wednesday, after what could be a second ...

Tuesday’s heat came on top of 39 new or tied heat records Monday. But just as dangerous as triple-digit heat is the lack of cooling at night, driven by the humidity.

Summer is just getting started, and millions of people are under heat advisories as a major heat wave spreads across the ...