If you thought the worst of the summer's sweltering temperatures were behind us, think again. Some schools closed early as the late-August heat wave gripping Ohio brought temperatures not seen in ...

The heat is on in Alabama, and it's only getting hotter. The heat index is expected to climb sharply from Monday, June 2, through Monday, June 9, pushing conditions into potentially dangerous ...

The heat index is a measure of how hot it really feels on your body when relative humidity is factored in with the actual air temperature. Since heat index values were devised for shady, light wind ...