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

"Dangerous heat will intensify across much of the Northeast and Mid-Atlantic early this week," meteorologist Jacob Hinson said.

The intensifying and expansive heat wave affecting around 150 million people in the United States from Wisconsin to ...

Humidity will soon surge to extreme levels across 40 states. Find out where there will be excessive heat and humidity — and how humidity patterns are changing.

A Heat Advisory continues for the entire region until 8 p.m. Friday. [DOWNLOAD: Free WHIO-TV News app for alerts as news breaks ] Storm Center 7 continues to TRACK this dangerous heat today on ...

The heat wave caused disruptions to public transport across the Northeast. Amtrak said it will be forced to slow train speeds between 12 p.m. and 8 p.m. on June 24 between Washington, D.C., and New ...

A dangerous heat wave has moved across the Midwest and northeastern U.S. this week, prompting National Weather Service (NWS) meteorologists in many states to warn of life-threatening temperatures.

Temperatures along the Jersey Shore will top out at about 90 degrees, though the heat index could reach 105. Cooling centers open across N.J. as dangerous heat wave hits state ...

Administrative Headquarters, Justice Center among affected buildings expected to open at 10 a.m. as heat advisory remains in effect with heat index reaching 103 degrees.