Jefferson County, IL: Current UV Index and Hourly Forecast

As of 12:26 PM CST on January 25, 2025, all 10 cities in Jefferson County, IL in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Mount Vernon, IL with a reading of 2.2.

Over the next 24 hours, the highest UV Index reading in Jefferson County, IL is expected to be 2.2 in Mount Vernon between 12:00 PM - 1:00 PM CST today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Jefferson County, IL as of 12:26 PM CST, January 25, 2025

Current UV Index in Cities in Jefferson County, IL

12:26 PM CST, January 25, 2025