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

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As of 4:04 PM PDT on July 5, 2025, all 23 cities in Santa Clara County, CA in our database have a UV Index reading of High. The city with the highest UV Index reading right now is East Foothills, CA with a reading of 5.9.

Over the next 24 hours, the highest UV Index reading in Santa Clara County, CA is expected to be 9.5 in East Foothills 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 - 5.8
• Cambrian Park - 5.8
• Campbell - 5.8
• Cupertino - 5.8
• East Foothills - 5.9
• Fruitdale - 5.8
• Gilroy - 5.7
• Lexington Hills - 5.8
• Los Altos - 5.8
• Los Altos Hills - 5.8
• Los Gatos - 5.8
• Loyola - 5.8
• Milpitas - 5.7
• Monte Sereno - 5.8
• Morgan Hill - 5.8
• Mountain View - 5.7
• Palo Alto - 5.7
• San Jose - 5.8
• San Martin - 5.7
• Santa Clara - 5.8
• Saratoga - 5.8
• Stanford - 5.7
• Sunnyvale - 5.7