As of 3:33 PM CDT on June 10, 2026, out of 10 cities in La Crosse County, WI in our database, 8 cities (80%) have a UV Index reading of High, while 2 cities (20%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Onalaska, WI with a reading of 6.1.
Over the next 24 hours, the highest UV Index reading in La Crosse County, WI is expected to be 7.8 in St. Joseph 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 |