Sonoma County, CA: Current UV Index and Hourly Forecast

As of 11:38 AM PDT on April 20, 2025, all 38 cities in Sonoma County, CA in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Santa Rosa, CA with a reading of 5.3.

Over the next 24 hours, the highest UV Index reading in Sonoma County, CA is expected to be 7.7 in Petaluma 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 Sonoma County, CA as of 11:38 AM PDT, April 20, 2025

Current UV Index in Cities in Sonoma County, CA

11:38 AM PDT, April 20, 2025