A widespread heat wave is pushing dangerously high temperatures across large parts of the United States this week.

Atticus Dryden plays in the water with his sister, Penelope Dryden, both of Kalamazoo, as they try to beat the heat at Ramona ...

Extremely dangerous heat, coupled with humidity, could result in heat index readings of 100 to 115 degrees from the Midwest ...

A heat wave will blast much of the eastern U.S. this week, and forecasters say temperatures will feel even hotter because of the high humidity that's arriving with it.

The U.S. is looking at an unwelcome birthday gift: a dangerous heat wave arriving ahead of the holiday weekend. Limited time: Save 25% on NBC News subscription Get exclusive reporting, live Q&As and ...

Dangerous heat is forecast to expand from the interior West into the Midwest and parts of the East.

A sprawling and dangerous heat wave gripping much of the central and eastern United States is raising concerns about power demand and outage risks ahead of the Fourth of July holiday. Tens of ...

The Boston area is set to experience its second official heat wave of the month, as the eastern edge of an expansive heat ...

Temperatures are expected to near or exceed triple digits across the Inland Empire, raising the risk of critical fire weather ...

Last week wasn't a great one when it comes to weather at the Jersey Shore. This one will be much better, at least if you like heat. A heat wave will hit New Jersey this week with hot weather moving ...