UV Index Today in Madison County, Illinois (IL)

The average maximum UV Index today across 55 locations in Madison County, Illinois (IL), is 4.4. The highest projected maximum is 4.6 in St. Louis at 1:00 PM CDT, while the lowest projected maximum is 3.9 in Staunton at 2:00 PM CDT.

Tomorrow, the average maximum UV Index across those same locations is expected to be 5.5. The highest projected maximum is 5.7 in Staunton at 1:00 PM CDT, and the lowest projected maximum is 5.3 in Edwardsville at 1:00 PM CDT.