As of 4:17 PM CDT on June 10, 2026, out of 19 cities in Marathon County, WI in our database, 11 cities (58%) have a UV Index reading of Low, while 8 cities (42%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Kronenwetter, WI with a reading of 4.3.
Over the next 24 hours, the highest UV Index reading in Marathon County, WI is expected to be 9 in Stratford 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 |