As of 6:50 PM EDT on October 8, 2025, all 9 cities in Ontonagon County, MI in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Ontonagon, MI with a reading of 0.5.
Over the next 24 hours, the highest UV Index reading in Ontonagon County, MI is expected to be 3.5 in Bruce Crossing between 2:00 PM - 3:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |