Illinois (IL): Current UV Index and Hourly Forecast

  • USA
  • Illinois

As of 10:58 PM CDT on September 18, 2025, all 1461 cities in Illinois in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in Illinois is expected to be 6 in Oquawka between 1:00 PM - 2:00 PM CDT tomorrow.

Search Cities in Illinois

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Illinois as of 10:58 PM CDT, September 18, 2025

Counties in Illinois (IL)

Current UV Index in Major Cities in Illinois (IL)

10:58 PM CDT, September 18, 2025