San Diego County, CA: Current UV Index and Hourly Forecast

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As of 4:08 PM PST on January 6, 2026, all 56 cities in San Diego County, CA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is San Diego, CA with a reading of 0.2.

Over the next 24 hours, the highest UV Index reading in San Diego County, CA is expected to be 2.8 in Escondido between 12:00 PM - 1:00 PM PST tomorrow.

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Current UV Index in Cities in San Diego County, CA

• Alpine - 0.2
• Bonita - 0.2
• Bonsall - 0.2
• Borrego Springs - 0.1
• Bostonia - 0.2
• Boulevard - 0.2
• Camp Pendleton South - 0.2
• Campo - 0.1
• Carlsbad - 0.2
• Casa de Oro-Mount Helix - 0.2
• Chula Vista - 0.2
• Coronado - 0.2
• Crest - 0.2
• Del Dios - 0.2
• Del Mar - 0.2
• Descanso - 0.2
• El Cajon - 0.2
• Elfin Forest - 0.2
• Encinitas - 0.2
• Escondido - 0.2
• Eucalyptus Hills - 0.2
• Fairbanks Ranch - 0.2
• Fallbrook - 0.2
• Granite Hills - 0.2
• Harbison Canyon - 0.2
• Harmony Grove - 0.2
• Hidden Meadows - 0.2
• Imperial Beach - 0.2
• Jacumba - 0.2
• Jamul - 0.2
• Julian - 0.1
• La Mesa - 0.2
• La Presa - 0.2
• Lake San Marcos - 0.2
• Lakeside - 0.2
• Lemon Grove - 0.2
• Mount Laguna - 0.1
• National City - 0.2
• Oceanside - 0.2
• Pala - 0.2
• Pine Valley - 0.1
• Potrero - 0.2
• Poway - 0.2
• Rainbow - 0.2
• Ramona - 0.2
• Rancho San Diego - 0.2
• Rancho Santa Fe - 0.2
• San Diego - 0.2
• San Diego Country Estates - 0.2
• San Marcos - 0.2
• Santee - 0.2
• Solana Beach - 0.2
• Spring Valley - 0.2
• Valley Center - 0.2
• Vista - 0.2
• Winter Gardens - 0.2