Millions of Americans are under heat alerts Monday as a heat wave brings triple-digit temperatures or heat indices to nearly ...

A dangerous heat wave continues to scorch a large part of the United States, with more than 130 million people under extreme ...

It’s the hottest time of the year in the United States and another heat dome is about to make millions of people feel every ...

More than 200 million people across most of the United States are on alert for widespread, dangerous heat on Monday.

A sweltering heat wave is keeping over 120 million Americans and 28 states in the United States under alert for dangerously ...

The National Weather Service has warned of "searing heat and oppressive humidity that occurs during the 'dog days of summer'.

It's normal to be warm everywhere this time of the year, but some portions of the United States are experiencing extreme heat ...

A punishing heat wave will bring hot temperatures to eastern US and linger for several days, underscoring how climate change ...

JACKSONVILLE, Fla. — A prolonged and dangerous heat wave is gripping the eastern half of the United States, setting daily temperature records and bringing a surge in heat-related illnesses.

Extreme humidity and triple-digit temperatures are affecting around 250 million people across the United States. Here's the science behind the heat dome that’s stifling the nation.

Three Democratic lawmakers have proposed legislation to classify extreme heat as a disaster, which would allow federal ...