As of 11:46 AM MST on December 15, 2025, all 54 cities in Pima County, AZ in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Arivaca, AZ with a reading of 3.1.
Over the next 24 hours, the highest UV Index reading in Pima County, AZ is expected to be 3.8 in Arivaca 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 |