As of 4:52 PM EDT on June 29, 2025, out of 3 cities in Mackinac County, MI in our database, 2 cities (67%) have a UV Index reading of High, while 1 city (33%) have a UV Index reading of Low. The city with the highest UV Index reading right now is St. Ignace, MI with a reading of 6.3.
Over the next 24 hours, the highest UV Index reading in Mackinac County, MI is expected to be 8.6 in Naubinway 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 |