As of 2:02 PM MST on September 13, 2025, all 32 cities in Coconino County, AZ in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Williams, AZ with a reading of 7.1.
Over the next 24 hours, the highest UV Index reading in Coconino County, AZ is expected to be 9.1 in Fort Valley between 12:00 PM - 1:00 PM MST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |