As of 2:32 PM EDT on August 20, 2026, all 17 cities in Genesee County, MI in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Fenton, MI with a reading of 6.8.
Over the next 24 hours, the highest UV Index reading in Genesee County, MI is expected to be 6.9 in Montrose between 1:00 PM - 2:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |