A Heat Advisory continues until 7 p.m. Wednesday for the following counties: Macon, Moultrie, Douglas, Coles, Edgar and Shelby. High temperatures in these areas are expected to range from 100 to 105 degrees on Tuesday and Wednesday with afternoon heat index values around 105 to 110 both days. Little relief is expected at night as the heat index value remains above 75.
Starting on Wednesday at noon, the following counties will be added to the Heat Advisory: DeWitt, Piatt, Champaign and Vermilion. This advisory will also run until 7 p.m. Wednesday. The National Weather Service says in these counties, high temperatures on Tuesday are forecast in the mid to upper 90s. High temperatures on Wednesday will range from 100 to 105 degrees. Heat index values may reach as high as 110, especially south of the I-74 corridor.