As of 1:41 AM CDT on September 22, 2025, all 10 cities in Pierce County, WI in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Pierce County, WI is expected to be 2.5 in Bay City between 11:00 AM - 12:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |