As of 12:56 PM CST on December 21, 2024, all 14 cities in Jefferson County, WI in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Lake Mills, WI with a reading of 1.5.
Over the next 24 hours, the highest UV Index reading in Jefferson County, WI is expected to be 1.5 in Fort Atkinson between 11:00 AM - 12:00 PM CST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |