Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

At least nine states along the East Coast faced summer swelter on Monday, and the steamy weather is expected to persist on ...

The Electric Reliability Council of Texas said its latest forecast calls for this summer’s peak demand to reach 87.5 gigawatts — 2 gigawatts higher than the current record.

ERCOT says Texas' power grid could face its biggest strain between 8-9 p.m. this summer as solar generation drops while temperatures remain high.

Texas is expected to set a new record for peak energy demand this year during what is predicted to be another of the hottest ...

A heat wave is currently affecting about 160 million people, according to the National Weather Service. Here's which states ...

Stay safe in this sweltering heat, New Jersey. Here's the latest today, from heat maps, advisories and warnings, to when we'll see relief.

E! News Heat index measures how hot it actually feels when factoring for humidity. Prolonged exposure to heat index above 80 degrees can lead to fatigue, as previously reported by USA TODAY.

Remote-sensing data and artificial intelligence are mapping the most heat-vulnerable buildings in cities like Delhi, in an effort to target relief from extreme temperatures at a granular level.

A map from the NWS HeatRisk tool that shows where the most dangerous heat will be next Monday, June 23. NWS HeatRisk "This level of rare and/or long-duration extreme heat with little to no ...

A brutal heat wave across the eastern United States trapped millions of people in sweltering air this week with record-high ...