Santa Clara County, CA: Current UV Index and Hourly Forecast

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As of 2:26 PM PDT on May 14, 2025, all 23 cities in Santa Clara County, CA in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is East Foothills, CA with a reading of 8.2.

Over the next 24 hours, the highest UV Index reading in Santa Clara County, CA is expected to be 8.9 in San Jose between 1:00 PM - 2:00 PM PDT tomorrow.

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Current UV Index in Cities in Santa Clara County, CA

• Alum Rock - 8.1
• Cambrian Park - 8.1
• Campbell - 8.1
• Cupertino - 8.1
• East Foothills - 8.2
• Fruitdale - 8.1
• Gilroy - 8
• Lexington Hills - 8.1
• Los Altos - 8.1
• Los Altos Hills - 7.9
• Los Gatos - 8.1
• Loyola - 8.1
• Milpitas - 8
• Monte Sereno - 8.1
• Morgan Hill - 8.1
• Mountain View - 8
• Palo Alto - 8
• San Jose - 8.1
• San Martin - 8
• Santa Clara - 8.1
• Saratoga - 8.1
• Stanford - 8
• Sunnyvale - 8