Jersey County, IL: Current UV Index and Hourly Forecast

As of 4:21 PM CDT on August 30, 2025, all 6 cities in Jersey County, IL in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Jerseyville, IL with a reading of 3.8.

Over the next 24 hours, the highest UV Index reading in Jersey County, IL is expected to be 7.1 in Grafton 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 Jersey County, IL as of 4:21 PM CDT, August 30, 2025

Current UV Index in Cities in Jersey County, IL

4:21 PM CDT, August 30, 2025