San Joaquin County, CA: Current UV Index and Hourly Forecast

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As of 9:58 AM PDT on August 30, 2025, all 28 cities in San Joaquin County, CA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Stockton, CA with a reading of 1.6.

Over the next 24 hours, the highest UV Index reading in San Joaquin County, CA is expected to be 7.7 in Tracy between 1:00 PM - 2:00 PM PDT today.

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Current UV Index in Cities in San Joaquin County, CA

• Acampo - 1.5
• August - 1.6
• Collierville - 1.5
• Country Club - 1.6
• Dogtown - 1.5
• Escalon - 1.6
• Farmington - 1.5
• French Camp - 1.6
• Garden Acres - 1.6
• Kennedy - 1.6
• Lathrop - 1.6
• Lincoln Village - 1.6
• Linden - 1.5
• Lockeford - 1.5
• Lodi - 1.6
• Manteca - 1.6
• Morada - 1.6
• Mountain House - 1.6
• Peters - 1.5
• Ripon - 1.6
• Stockton - 1.6
• Taft Mosswood - 1.6
• Terminous - 1.5
• Thornton - 1.5
• Tracy - 1.6
• Victor - 1.5
• Waterloo - 1.6
• Woodbridge - 1.5