Williamson County, IL: Current UV Index and Hourly Forecast

As of 12:40 AM CDT on April 22, 2025, all 16 cities in Williamson County, IL 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 Williamson County, IL is expected to be 7.3 in Hurst between 1:00 PM - 2:00 PM CDT today.

Search Cities in Williamson County, IL

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Williamson County, IL as of 12:40 AM CDT, April 22, 2025

Current UV Index in Cities in Williamson County, IL

12:40 AM CDT, April 22, 2025