Illinois (IL): Current UV Index and Hourly Forecast

  • USA
  • Illinois

As of 2:34 PM CDT on September 1, 2025, out of 1461 cities in Illinois in our database, 1445 cities (99%) have a UV Index reading of High, 15 cities (1%) have a UV Index reading of Moderate, while 1 city (0%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Metropolis, IL with a reading of 7.1.

Over the next 24 hours, the highest UV Index reading in Illinois is expected to be 7.3 in Rantoul between 1:00 PM - 2:00 PM CDT tomorrow.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Illinois as of 2:34 PM CDT, September 1, 2025

Counties in Illinois (IL)

Current UV Index in Major Cities in Illinois (IL)

2:34 PM CDT, September 1, 2025