As of 3:27 PM EDT on April 1, 2025, all 11 cities in St. Clair County, MI in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is St. Clair, MI with a reading of 4.2.
Over the next 24 hours, the highest UV Index reading in St. Clair County, MI is expected to be 4.2 in St. Clair between 3:00 PM - 4:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |