As of 4:45 PM PDT on September 28, 2026, out of 17 cities in Mono County, CA in our database, 10 cities (59%) have a UV Index reading of Moderate, while 7 cities (41%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Mammoth Lakes, CA with a reading of 2.7.
Over the next 24 hours, the highest UV Index reading in Mono County, CA is expected to be 7.5 in Crowley Lake between 1:00 PM - 2:00 PM PDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |