Sonoma County, CA: Current UV Index and Hourly Forecast

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As of 1:56 PM PDT on September 15, 2025, out of 38 cities in Sonoma County, CA in our database, 31 cities (82%) have a UV Index reading of Very High, while 7 cities (18%) have a UV Index reading of High. The city with the highest UV Index reading right now is Kenwood, CA with a reading of 7.9.

Over the next 24 hours, the highest UV Index reading in Sonoma County, CA is expected to be 7.9 in Kenwood between 1:00 PM - 2:00 PM PDT today.

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Current UV Index in Cities in Sonoma County, CA

• Bloomfield - 7.7
• Bodega - 6.6
• Bodega Bay - 6.6
• Boyes Hot Springs - 7.7
• Carmet - 6.6
• Cazadero - 7.7
• Cloverdale - 7.8
• Cotati - 7.7
• El Verano - 7.7
• Eldridge - 7.7
• Fetters Hot Springs-Agua Caliente - 7.7
• Forestville - 7.7
• Fulton - 7.7
• Geyserville - 7.8
• Glen Ellen - 7.7
• Graton - 7.7
• Guerneville - 7.7
• Healdsburg - 7.7
• Jenner - 7.7
• Kenwood - 7.9
• Larkfield-Wikiup - 7.7
• Monte Rio - 7.7
• Occidental - 7.7
• Penngrove - 7.7
• Petaluma - 7.7
• Petaluma Center - 7.7
• Rohnert Park - 7.7
• Salmon Creek - 6.6
• Santa Rosa - 7.7
• Sea Ranch - 6.9
• Sebastopol - 7.7
• Sereno del Mar - 7.7
• Sonoma - 7.7
• Sonoma State University - 7.7
• Temelec - 7.7
• Timber Cove - 6.5
• Valley Ford - 6.6
• Windsor - 7.7