A dangerous heat wave is tightening its grip on the East Coast, with the worst conditions underway as millions prepare to celebrate the Fourth of July outdoors.

Millions of Americans across the eastern half of the US are facing a prolonged stretch of dangerous and potentially record-breaking heat as Americans get set to head outdoors to…

A heat dome will push indexes to 115°F across the East this week, arriving along with World Cup matches and America 250 celebrations.

Sweltering conditions are expected to last through the weekend

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