Cities open cooling centres, extended pool hours and urged residents to conserve electricity

A heat wave will blast a large swath of the U.S. this week. The National Weather Service says temperatures will feel hotter because of the high humidity that's arriving with it.

A heat wave will blast the eastern United States this week

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