Another heat dome is moving over Illinois this week as temperatures near the triple digits. Here's what that means and when we can expect relief.

A strong ridge of high pressure will bring stifling heat and humidity to Central Illinois this week, with heat index values expected to remain over 100° for several days and potentially reaching up to 115°.

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.