Monroe County, WI: Current UV Index and Hourly Forecast

As of 8:44 AM CST on January 20, 2026, all 12 cities in Monroe County, WI in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Sparta, WI with a reading of 0.1.

Over the next 24 hours, the highest UV Index reading in Monroe County, WI is expected to be 1.4 in Cashton 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 Monroe County, WI as of 8:44 AM CST, January 20, 2026

Current UV Index in Cities in Monroe County, WI

8:44 AM CST, January 20, 2026