The National Weather Service already has issued extreme heat warnings, watches and advisories across a swath of the Midwest ...

Almost 85 million Americans from South Dakota to Texas and North Carolina to Florida are already under extreme heat warnings, watches or advisories.

Temperatures could trend cooler by the end of the week thanks to the increased rain coverage. Highs could range between the ...

A heat wave will intensify along the East Coast this week as tropical humidity levels and 100-degree temperatures reach big cities from Boston to Washington.

The heat index, or how it feels with humidity factored in, will rise into the triple digits for millions as the hot dome of ...

More than 150 million people in the eastern U.S. are under heat alerts as of early Tuesday – including about 75 million under extreme heat warnings from North Carolina to Maine.

For example, when the air temperature is 100 degrees Fahrenheit, and the relative humidity is 55 percent, the heat index can shoot up to a sweltering 124 degrees Fahrenheit. And that’s in the shade.

A persistent and unusual summer heat wave is set to bake the Richmond area for nearly the entire week. The air could feel as hot as 110 degrees in central Virginia during the warmest periods ...

A hosepipe ban affecting more than five million people has come into effect today across much of Yorkshire, parts of North ...

Another scorcher, feels like 100-105 degrees in south-central Pennsylvania Highs will challenge records again today, then temperatures fall toward the end of the week Beginning of dialog window.

Tuesday will be the hottest day of this heat wave for the mid-Atlantic and Northeast, and portions a dozen states have forecasts of 100 degrees or higher.