As of 1:20 PM CDT on August 30, 2025, out of 11 cities in Rock County, WI in our database, 9 cities (82%) have a UV Index reading of Moderate, while 2 cities (18%) have a UV Index reading of High. The city with the highest UV Index reading right now is Beloit, WI with a reading of 5.8.
Over the next 24 hours, the highest UV Index reading in Rock County, WI is expected to be 6.4 in Clinton between 12:00 PM - 1:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |