UV Index Today in California (CA)
Tuesday, April 7, 2026 - 1:45 AM PDT (GMT-7)
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The average maximum UV Index today across 1,212 locations in California (CA), is 8. The highest projected maximum is 9.7 in Big Bear City at 1:00 PM PDT, while the lowest projected maximum is 5.9 in Smith River at 1:00 PM PDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 8. The highest projected maximum is 9.8 in Big Bear City at 1:00 PM PDT, and the lowest projected maximum is 6.1 in Smith River at 1:00 PM PDT.
58 Counties in California (CA)
Average Maximum UV Index Today
- Alameda County - 7.6
- Contra Costa County - 7.5
- Fresno County - 8
- Kern County - 8.6
- Los Angeles County - 8.6
- Marin County - 7.5
- Merced County - 7.7
- Monterey County - 8.1
- Orange County - 8.6
- Placer County - 7.4
- Riverside County - 8.8
- Sacramento County - 7.3
- San Bernardino County - 8.8
- San Diego County - 8.9
- San Francisco County - 7.5
- San Joaquin County - 7.5
- San Luis Obispo County - 8.5
- San Mateo County - 7.7
- Santa Barbara County - 8.7
- Santa Clara County - 7.8
- Santa Cruz County - 7.9
- Solano County - 7.4
- Sonoma County - 7.4
- Stanislaus County - 7.6
- Tulare County - 8.2
- Ventura County - 8.7
1212 Places in California (CA)
Maximum UV Index Today