"There is high confidence that heat will reach levels that would affect anyone without sufficient cooling." Over 50 million Americans under heat advisory amid sweltering temperatures across South and Midwest: 'This level of heat can be deadly' first appeared on The Cool Down.

A HEAT ADVISORY and AIR QUALITY ALERT is in effect for much of northeast Ohio. The heat and humidity will start to increase Wednesday and will stay hot through Friday.

AirVenture patrons are being advised to stay extremely well hydrated when visiting Wittman Regional Airport Wednesday.

NWS expects the heat value to go up to 110 degrees. The organization warns that hot temperatures, coupled with humidity, may cause heat illness. Precautionary measures provided by NWS include drinking plenty of water, staying out of the sun and staying in air-conditioned rooms.

The National Weather Service is using new heat alert terminology beginning this summer to improve public awareness and understanding of what the weather service says is the leading cause of weather-related deaths in the country,

The National Weather Service released a heat advisory at 10:42 p.m. on Monday in effect until Tuesday at 9 p.m. for Blount, Etowah, Calhoun, Cherokee, Jefferson, Shelby, St. Clair, Talladega, Chilton,

The National Weather Service already has issued extreme heat warnings, watches and advisories across a swath of the Midwest and South.

Heat index values could rise to 110-112 degrees, according to the National Weather Service. Higher rain chances later in the week could offer relief.