As of 2:47 PM PDT on October 1, 2025, out of 1591 cities in California in our database, 761 cities (48%) have a UV Index reading of High, 518 cities (33%) have a UV Index reading of Low, while 312 cities (20%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Big Bear City, CA with a reading of 7.1.
Over the next 24 hours, the highest UV Index reading in California is expected to be 8.5 in Big Bear City 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 |