UV Index Today in California (CA)
Saturday, August 29, 2026 -9:46 AM PDT (GMT-7)
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The average maximum UV Index today across 1,212 locations in California (CA), is 8.7. The highest projected maximum is 11.1 in Big Bear City at 1:00 PM PDT, while the lowest projected maximum is 6.1 in Fort Bragg at 2:00 PM PDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 8.3. The highest projected maximum is 10.6 in Big Bear City at 1:00 PM PDT, and the lowest projected maximum is 6.2 in Point Arena at 2:00 PM PDT.
58 Counties in California (CA)
Average Maximum UV Index Today
- Alameda County - 7.9
- Contra Costa County - 7.8
- Fresno County - 8.5
- Kern County - 9.1
- Los Angeles County - 9.5
- Marin County - 7.6
- Merced County - 8.3
- Monterey County - 8.3
- Orange County - 9.7
- Placer County - 8.1
- Riverside County - 10.2
- Sacramento County - 7.8
- San Bernardino County - 10
- San Diego County - 10.2
- San Francisco County - 7.7
- San Joaquin County - 7.9
- San Luis Obispo County - 8.7
- San Mateo County - 7.9
- Santa Barbara County - 9.2
- Santa Clara County - 8.2
- Santa Cruz County - 8.2
- Solano County - 7.7
- Sonoma County - 7.7
- Stanislaus County - 8.2
- Tulare County - 8.7
- Ventura County - 9.4
1212 Places in California (CA)
Maximum UV Index Today