Alameda County, CA: Current UV Index and Hourly Forecast

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As of 2:11 PM PDT on May 14, 2025, all 20 cities in Alameda County, CA in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Fremont, CA with a reading of 8.

Over the next 24 hours, the highest UV Index reading in Alameda County, CA is expected to be 8.7 in Oakland between 1:00 PM - 2:00 PM PDT tomorrow.

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Current UV Index in Cities in Alameda County, CA

• Alameda - 7.9
• Albany - 7.8
• Ashland - 8
• Berkeley - 7.9
• Castro Valley - 8
• Cherryland - 8
• Dublin - 8
• Emeryville - 7.9
• Fairview - 8
• Fremont - 8
• Hayward - 8
• Livermore - 8
• Newark - 8
• Oakland - 7.9
• Piedmont - 7.9
• Pleasanton - 8
• San Leandro - 7.9
• San Lorenzo - 7.9
• Sunol - 8
• Union City - 8