UV Index Today in California (CA)
Friday, August 7, 2026 -11:31 AM PDT (GMT-7)
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The average maximum UV Index today across 1,212 locations in California (CA), is 9.7. The highest projected maximum is 11.6 in Big Bear City at 1:00 PM PDT, while the lowest projected maximum is 6.3 in Monterey at 2:00 PM PDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 9.7. The highest projected maximum is 11.8 in Big Bear City at 1:00 PM PDT, and the lowest projected maximum is 5.6 in Murphys at 3:00 PM PDT.
58 Counties in California (CA)
Average Maximum UV Index Today
- Alameda County - 9.5
- Contra Costa County - 9.5
- Fresno County - 8.9
- Kern County - 9.6
- Los Angeles County - 10.3
- Marin County - 9.1
- Merced County - 9.3
- Monterey County - 9.1
- Orange County - 10.2
- Placer County - 9.8
- Riverside County - 10.7
- Sacramento County - 9.3
- San Bernardino County - 10.6
- San Diego County - 10.8
- San Francisco County - 9
- San Joaquin County - 9.4
- San Luis Obispo County - 9.6
- San Mateo County - 9.1
- Santa Barbara County - 9.6
- Santa Clara County - 9.7
- Santa Cruz County - 9.5
- Solano County - 9.4
- Sonoma County - 9.4
- Stanislaus County - 9.4
- Tulare County - 8.8
- Ventura County - 9.8
1212 Places in California (CA)
Maximum UV Index Today