As of 12:43 PM PDT on April 1, 2025, out of 17 cities in Mariposa County, CA in our database, 13 cities (76%) have a UV Index reading of Low, while 4 cities (24%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Yosemite Valley, CA with a reading of 5.2.
Over the next 24 hours, the highest UV Index reading in Mariposa County, CA is expected to be 5.4 in Yosemite Valley between 11:00 AM - 12:00 PM PDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |