As of 4:52 PM CDT on September 19, 2025, all 8 cities in Green County, WI in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Brooklyn, WI with a reading of 2.1.
Over the next 24 hours, the highest UV Index reading in Green County, WI is expected to be 5.2 in Monroe 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 |