As of 6:56 PM EDT on May 30, 2026, out of 5 cities in Delta County, MI in our database, 4 cities (80%) have a UV Index reading of Low, while 1 city (20%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Rock, MI with a reading of 2.5.
Over the next 24 hours, the highest UV Index reading in Delta County, MI is expected to be 8.1 in Rock 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 |