More than 125 million Americans were under the highest level of extreme heat alerts during a wave of above-average ...

As previous disasters have laid bare the US’ vulnerabilities to other types of extreme weather, this week is revealing ...

When and where will the heat wane? Where does extreme heat remain? Large sections of the eastern half of the country still ...

The heat wave that has baked New Jersey this week will officially end on Thursday, though forecaster say very warm ...

Central Pennsylvania residents can expect a transition from intense heat to a more unsettled weather pattern today, with ...

A major heat wave will persist through the end of the week in some areas of the country. Here's what to do while the ...

A long-lasting extreme heat wave reached its dangerous crescendo Tuesday, bringing the hottest day in a decade to some major ...

We made it! After several record-breaking days with excessive heat in the Philadelphia region, including the first day with ...

By Tuesday night — following the fourth hottest day on record in Boston — Mass General’s emergency department was slammed.

The temperature in New York City has reached 100 degrees as the eastern U.S. sweltered under an extreme heat wave.

Another steamy day is on tap for Wednesday, but there's a risk of isolated thunderstorms that could pack small hail and ...

Fourth of July is less than two weeks away. Will the heat wave be over by then? Here's the forecast for Illinois.