Active AlertsPark Hills, MO

What: Heat index values up to 101.
Where: Portions of south central and southwest Illinois and central, east central, and southeast Missouri.
When: Until 8 PM CDT this evening.
Impacts: Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.