UV Index Today in California (CA)
Friday, May 22, 2026 -11:37 AMPDT (GMT-7)
- Home
- United States
- California
The average maximum UV Index today across 1,212 locations in California (CA), is 8.8. The highest projected maximum is 10.1 in Big Bear City at 1:00 PM PDT, while the lowest projected maximum is 6 in Monterey at 12:00 PM PDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 8.8. The highest projected maximum is 10.4 in Mammoth Lakes at 1:00 PM PDT, and the lowest projected maximum is 6.7 in Shelter Cove at 1:00 PM PDT.
58 Counties in California (CA)
Average Maximum UV Index Today
- Alameda County - 8.6
- Contra Costa County - 8.6
- Fresno County - 8.8
- Kern County - 9.2
- Los Angeles County - 9
- Marin County - 8.5
- Merced County - 8.7
- Monterey County - 8.3
- Orange County - 8.8
- Placer County - 8.4
- Riverside County - 9.1
- Sacramento County - 8.4
- San Bernardino County - 9.2
- San Diego County - 9.3
- San Francisco County - 8.5
- San Joaquin County - 8.5
- San Luis Obispo County - 8.8
- San Mateo County - 8.5
- Santa Barbara County - 9.1
- Santa Clara County - 8.7
- Santa Cruz County - 8.4
- Solano County - 8.5
- Sonoma County - 8.6
- Stanislaus County - 8.6
- Tulare County - 8.9
- Ventura County - 9.2
1212 Places in California (CA)
Maximum UV Index Today