As of 12:15 PM MST on June 18, 2026, out of 32 cities in Coconino County, AZ in our database, 31 cities (97%) have a UV Index reading of Extreme, while 1 city (3%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Fort Valley, AZ with a reading of 12.4.
Over the next 24 hours, the highest UV Index reading in Coconino County, AZ is expected to be 12.4 in Fort Valley between 12:00 PM - 1:00 PM MST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |