Rock County, WI: Current UV Index and Hourly Forecast

As of 8:22 AM CDT on March 28, 2026, all 11 cities in Rock County, WI in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Janesville, WI with a reading of 0.4.

Over the next 24 hours, the highest UV Index reading in Rock County, WI is expected to be 4.6 in Beloit between 1:00 PM - 2:00 PM CDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Rock County, WI as of 8:22 AM CDT, March 28, 2026

Current UV Index in Cities in Rock County, WI

8:22 AM CDT, March 28, 2026