As of 2:00 PM CDT on August 29, 2026, out of 20 cities in Walworth County, WI in our database, 10 cities (50%) have a UV Index reading of Moderate, while 10 cities (50%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Genoa City, WI with a reading of 4.6.
Over the next 24 hours, the highest UV Index reading in Walworth County, WI is expected to be 7.6 in Lake Geneva between 1:00 PM - 2:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |