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

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As of 1:31 PM PST on January 11, 2026, 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 2.1.

Over the next 24 hours, the highest UV Index reading in San Joaquin County, CA is expected to be 2.5 in Manteca between 12:00 PM - 1:00 PM PST tomorrow.

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Current UV Index in Cities in San Joaquin County, CA

• Acampo - 2
• August - 2.1
• Collierville - 2
• Country Club - 2.1
• Dogtown - 2
• Escalon - 2.1
• Farmington - 2.1
• French Camp - 2.1
• Garden Acres - 2.1
• Kennedy - 2.1
• Lathrop - 2.1
• Lincoln Village - 2.1
• Linden - 2.1
• Lockeford - 2
• Lodi - 2.1
• Manteca - 2.1
• Morada - 2.1
• Mountain House - 2.1
• Peters - 2.1
• Ripon - 2.1
• Stockton - 2.1
• Taft Mosswood - 2.1
• Terminous - 2.1
• Thornton - 2
• Tracy - 2.1
• Victor - 2
• Waterloo - 2.1
• Woodbridge - 2