As of 3:39 PM PDT on August 11, 2026, all 17 cities in Tuolumne County, CA in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Phoenix Lake, CA with a reading of 6.8.
Over the next 24 hours, the highest UV Index reading in Tuolumne County, CA is expected to be 7.8 in Phoenix Lake between 12:00 PM - 1:00 PM PDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |