Sonoma County, CA: Current UV Index and Hourly Forecast

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As of 12:27 AM PST on December 17, 2025, all 38 cities in Sonoma County, CA in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in Sonoma County, CA is expected to be 2.3 in Petaluma between 12:00 PM - 1:00 PM PST today.

Search Cities in Sonoma County, CA

Current UV Index in Cities in Sonoma County, CA

• Bloomfield - 0
• Bodega - 0
• Bodega Bay - 0
• Boyes Hot Springs - 0
• Carmet - 0
• Cazadero - 0
• Cloverdale - 0
• Cotati - 0
• El Verano - 0
• Eldridge - 0
• Fetters Hot Springs-Agua Caliente - 0
• Forestville - 0
• Fulton - 0
• Geyserville - 0
• Glen Ellen - 0
• Graton - 0
• Guerneville - 0
• Healdsburg - 0
• Jenner - 0
• Kenwood - 0
• Larkfield-Wikiup - 0
• Monte Rio - 0
• Occidental - 0
• Penngrove - 0
• Petaluma - 0
• Petaluma Center - 0
• Rohnert Park - 0
• Salmon Creek - 0
• Santa Rosa - 0
• Sea Ranch - 0
• Sebastopol - 0
• Sereno del Mar - 0
• Sonoma - 0
• Sonoma State University - 0
• Temelec - 0
• Timber Cove - 0
• Valley Ford - 0
• Windsor - 0