Sonoma County, CA: Current UV Index and Hourly Forecast

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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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Current UV Index in Cities in Sonoma County, CA

• Bloomfield - 5.3
• Bodega - 5.2
• Bodega Bay - 5.2
• Boyes Hot Springs - 5.3
• Carmet - 5.2
• Cazadero - 5.3
• Cloverdale - 5.3
• Cotati - 5.3
• El Verano - 5.3
• Eldridge - 5.3
• Fetters Hot Springs-Agua Caliente - 5.3
• Forestville - 5.3
• Fulton - 5.3
• Geyserville - 5.3
• Glen Ellen - 5.3
• Graton - 5.3
• Guerneville - 5.3
• Healdsburg - 5.3
• Jenner - 5.3
• Kenwood - 5.3
• Larkfield-Wikiup - 5.3
• Monte Rio - 5.3
• Occidental - 5.3
• Penngrove - 5.3
• Petaluma - 5.3
• Petaluma Center - 5.3
• Rohnert Park - 5.3
• Salmon Creek - 5.2
• Santa Rosa - 5.3
• Sea Ranch - 5.1
• Sebastopol - 5.3
• Sereno del Mar - 5.3
• Sonoma - 5.3
• Sonoma State University - 5.3
• Temelec - 5.3
• Timber Cove - 5.2
• Valley Ford - 5.2
• Windsor - 5.3