Alameda County, CA: Current UV Index and Hourly Forecast

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As of 2:28 PM PDT on March 13, 2026, out of 20 cities in Alameda County, CA in our database, 15 cities (75%) have a UV Index reading of High, while 5 cities (25%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Oakland, CA with a reading of 5.6.

Over the next 24 hours, the highest UV Index reading in Alameda County, CA is expected to be 6.2 in Fremont between 1:00 PM - 2:00 PM PDT tomorrow.

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Current UV Index in Cities in Alameda County, CA

• Alameda - 5.6
• Albany - 5.6
• Ashland - 5.5
• Berkeley - 5.6
• Castro Valley - 5.5
• Cherryland - 5.5
• Dublin - 5.5
• Emeryville - 5.6
• Fairview - 5.5
• Fremont - 5.2
• Hayward - 5.5
• Livermore - 5.3
• Newark - 5.2
• Oakland - 5.6
• Piedmont - 5.6
• Pleasanton - 5.5
• San Leandro - 5.6
• San Lorenzo - 5.6
• Sunol - 5.2
• Union City - 5.2