National Weather Service warns heat index could reach 115F as extreme heat grips midwest, Ohio Valley and east coast

Heat alerts span from Illinois to Florida and across the Northeast and New England.

As millions plan to celebrate the Fourth of July outdoors, meteorologists warn temperatures could soar to record-breaking, life-threatening highs.

Sweltering conditions are expected to last through 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

Sweltering conditions are expected to last through the weekend