Sonoma County, CA: Current UV Index and Hourly Forecast

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As of 11:20 AM PST on December 14, 2025, 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 Sonoma, CA with a reading of 1.9.

Over the next 24 hours, the highest UV Index reading in Sonoma County, CA is expected to be 2.2 in Santa Rosa between 12:00 PM - 1:00 PM PST today.

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Current UV Index in Cities in Sonoma County, CA

• Bloomfield - 1.8
• Bodega - 1.8
• Bodega Bay - 1.8
• Boyes Hot Springs - 1.9
• Carmet - 1.8
• Cazadero - 1.7
• Cloverdale - 1.7
• Cotati - 1.8
• El Verano - 1.9
• Eldridge - 1.9
• Fetters Hot Springs-Agua Caliente - 1.9
• Forestville - 1.7
• Fulton - 1.7
• Geyserville - 1.7
• Glen Ellen - 1.9
• Graton - 1.7
• Guerneville - 1.7
• Healdsburg - 1.7
• Jenner - 1.7
• Kenwood - 1.8
• Larkfield-Wikiup - 1.7
• Monte Rio - 1.7
• Occidental - 1.7
• Penngrove - 1.8
• Petaluma - 1.8
• Petaluma Center - 1.8
• Rohnert Park - 1.8
• Salmon Creek - 1.8
• Santa Rosa - 1.7
• Sea Ranch - 1.7
• Sebastopol - 1.7
• Sereno del Mar - 1.7
• Sonoma - 1.9
• Sonoma State University - 1.8
• Temelec - 1.9
• Timber Cove - 1.8
• Valley Ford - 1.8
• Windsor - 1.7