Multiday warnings of extreme heat have landed in New York, Boston and Philadelphia. The sultry weather has pushed east just ahead of weekend Fourth of July events in a region that revels in its role as a cornerstone of U.S. independence.

Millions across the central and eastern U.S. could face days of triple-digit heat index values.

More than 130 million Americans in southern and Great Plains states were under moderate to severe heat risk over the weekend

A dangerous heatwave is set to engulf large parts of the central and eastern United States from Tuesday through the July 4 holiday weekend. Forecasters have warned of extreme…

A prolonged, intense heat wave will make temperatures feel as hot as 115 degrees Fahrenheit in the eastern U.S. this week