Dangerous heat is expected across large swaths of the U.S. this week, according to the National Weather Service.

A heat dome will bring dangerously hot and humid conditions to the eastern half of the United States next week in the region’s most widespread heat wave of the summer so far.

Forecasters warn of triple-digit heat indices and blazing hot temperatures that could break records and linger through Independence Day.

A heat wave will blast the eastern United States this week