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

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As of 3:38 PM PDT on September 15, 2025, out of 28 cities in San Joaquin County, CA in our database, 25 cities (89%) have a UV Index reading of High, while 3 cities (11%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Tracy, CA with a reading of 5.6.

Over the next 24 hours, the highest UV Index reading in San Joaquin County, CA is expected to be 7.3 in Manteca between 1:00 PM - 2:00 PM PDT tomorrow.

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Current UV Index in Cities in San Joaquin County, CA

• Acampo - 5.5
• August - 5.5
• Collierville - 5.5
• Country Club - 5.5
• Dogtown - 5.5
• Escalon - 5.5
• Farmington - 5.4
• French Camp - 5.5
• Garden Acres - 5.5
• Kennedy - 5.5
• Lathrop - 5.5
• Lincoln Village - 5.5
• Linden - 5.4
• Lockeford - 5.5
• Lodi - 5.5
• Manteca - 5.5
• Morada - 5.5
• Mountain House - 5.6
• Peters - 5.4
• Ripon - 5.5
• Stockton - 5.5
• Taft Mosswood - 5.5
• Terminous - 5.5
• Thornton - 5.6
• Tracy - 5.6
• Victor - 5.5
• Waterloo - 5.5
• Woodbridge - 5.5