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.

Millions of Americans across the eastern half of the US are facing a prolonged stretch of dangerous heat that’s likely to break records as Americans get set to head outdoors to…

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