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

As of 2:51 AM PDT on July 13, 2025, all 28 cities in San Joaquin County, CA in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in San Joaquin County, CA is expected to be 10.8 in Tracy between 1:00 PM - 2:00 PM PDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in San Joaquin County, CA as of 2:51 AM PDT, July 13, 2025

Current UV Index in Cities in San Joaquin County, CA

2:51 AM PDT, July 13, 2025