UV Index Today in Santa Clara County, California (CA)
Friday, May 22, 2026 -11:40 AMPDT (GMT-7)
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The average maximum UV Index today across 30 locations in Santa Clara County, California (CA), is 8.7. The highest projected maximum is 8.8 in San Jose at 1:00 PM PDT, while the lowest projected maximum is 8.5 in Interlaken at 1:00 PM PDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 8.8. The highest projected maximum is 8.9 in San Jose at 1:00 PM PDT, and the lowest projected maximum is 8.6 in Fremont at 1:00 PM PDT.
30 Places in Santa Clara County, California (CA)
Maximum UV Index Today