Wisconsin (WI): Current UV Index and Hourly Forecast

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As of 4:55 AM CST on January 12, 2026, all 790 cities in Wisconsin 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 Wisconsin is expected to be 1.5 in Waukesha 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 Wisconsin as of 4:55 AM CST, January 12, 2026

Counties in Wisconsin (WI)

Current UV Index in Major Cities in Wisconsin (WI)

4:55 AM CST, January 12, 2026