As of 4:43 PM CDT on July 20, 2026, out of 12 cities in Monroe County, WI in our database, 10 cities (83%) have a UV Index reading of Moderate, while 2 cities (17%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Sparta, WI with a reading of 5.
Over the next 24 hours, the highest UV Index reading in Monroe County, WI is expected to be 7.4 in Cashton between 2:00 PM - 3:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |