Sonoma County, CA: Current UV Index and Hourly Forecast

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As of 8:29 AM PDT on October 4, 2026, all 38 cities in Sonoma County, CA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Santa Rosa, CA with a reading of 0.1.

Over the next 24 hours, the highest UV Index reading in Sonoma County, CA is expected to be 5.3 in Timber Cove between 2:00 PM - 3:00 PM PDT today.

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Current UV Index in Cities in Sonoma County, CA

• Bloomfield - 0.1
• Bodega - 0.1
• Bodega Bay - 0.1
• Boyes Hot Springs - 0.1
• Carmet - 0.1
• Cazadero - 0.1
• Cloverdale - 0.1
• Cotati - 0.1
• El Verano - 0.1
• Eldridge - 0.1
• Fetters Hot Springs-Agua Caliente - 0.1
• Forestville - 0.1
• Fulton - 0.1
• Geyserville - 0.1
• Glen Ellen - 0.1
• Graton - 0.1
• Guerneville - 0.1
• Healdsburg - 0.1
• Jenner - 0.1
• Kenwood - 0.1
• Larkfield-Wikiup - 0.1
• Monte Rio - 0.1
• Occidental - 0.1
• Penngrove - 0.1
• Petaluma - 0.1
• Petaluma Center - 0.1
• Rohnert Park - 0.1
• Salmon Creek - 0.1
• Santa Rosa - 0.1
• Sea Ranch - 0.1
• Sebastopol - 0.1
• Sereno del Mar - 0.1
• Sonoma - 0.1
• Sonoma State University - 0.1
• Temelec - 0.1
• Timber Cove - 0.1
• Valley Ford - 0.1
• Windsor - 0.1