UV Index Today in San Francisco County, California (CA)
Wednesday, July 15, 2026 -10:21 AM PDT (GMT-7)
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The average maximum UV Index today across 5 locations in San Francisco County, California (CA), is 9.8. The highest projected maximum is 9.9 in Alameda at 1:00 PM PDT, while the lowest projected maximum is 9.8 in San Francisco at 1:00 PM PDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 9.9. The highest projected maximum is 10 in Alameda at 1:00 PM PDT, and the lowest projected maximum is 9.8 in San Francisco at 1:00 PM PDT.
5 Places in San Francisco County, California (CA)
Maximum UV Index Today