Orange County, CA: Current UV Index and Hourly Forecast

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As of 6:32 PM PDT on August 21, 2025, all 45 cities in Orange County, CA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Mission Viejo, CA with a reading of 0.6.

Over the next 24 hours, the highest UV Index reading in Orange County, CA is expected to be 10 in San Clemente between 1:00 PM - 2:00 PM PDT tomorrow.

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Current UV Index in Cities in Orange County, CA

• Aliso Viejo - 0.6
• Anaheim - 0.6
• Brea - 0.5
• Buena Park - 0.6
• Costa Mesa - 0.6
• Coto de Caza - 0.6
• Cypress - 0.6
• Dana Point - 0.6
• Fountain Valley - 0.6
• Fullerton - 0.6
• Garden Grove - 0.6
• Huntington Beach - 0.6
• Irvine - 0.6
• La Habra - 0.6
• La Palma - 0.6
• Ladera Ranch - 0.6
• Laguna Beach - 0.6
• Laguna Hills - 0.6
• Laguna Niguel - 0.6
• Laguna Woods - 0.6
• Lake Forest - 0.6
• Las Flores - 0.6
• Los Alamitos - 0.6
• Midway City - 0.6
• Mission Viejo - 0.6
• Modjeska - 0.6
• Newport Beach - 0.6
• North Tustin - 0.6
• Orange - 0.6
• Placentia - 0.5
• Rancho Mission Viejo - 0.6
• Rancho Santa Margarita - 0.6
• Rossmoor - 0.6
• San Clemente - 0.6
• San Juan Capistrano - 0.6
• Santa Ana - 0.6
• Seal Beach - 0.6
• Silverado - 0.6
• Stanton - 0.6
• Trabuco Canyon - 0.6
• Tustin - 0.6
• Villa Park - 0.6
• Westminster - 0.6
• Williams Canyon - 0.6
• Yorba Linda - 0.5