Dangerous heat continues across northern Illinois through Thursday, with heat indices potentially reaching 105 to 109 degrees. Heat advisories are in effect through this evening area wide.

Corn sweat is an agricultural phenomenon that makes humidity during a heat wave even worse, especially in states like Illinois where it's a major cash crop.

Another round of excessive heat is on the way through much of the United States next week, with heat indices predicted to reach 110 degrees Fahrenheit

The National Weather Service issued Extreme Heat Watches and Flood Advisories throughout Illinois. Here's the forecast.

The heat index is expected to hit 105 to 115 degrees in the metro area on Wednesday. The setting sun won't provide much relief — temperatures will likely remain above 90 degrees into the evening hours.