Orange County, CA: Current UV Index and Hourly Forecast

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As of 12:33 PM PST on January 18, 2026, all 45 cities in Orange County, CA in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is San Clemente, CA with a reading of 3.3.

Over the next 24 hours, the highest UV Index reading in Orange County, CA is expected to be 3.3 in San Clemente between 12:00 PM - 1:00 PM PST today.

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Current UV Index in Cities in Orange County, CA

• Aliso Viejo - 3.2
• Anaheim - 3.1
• Brea - 3.2
• Buena Park - 3.1
• Costa Mesa - 3.1
• Coto de Caza - 3.3
• Cypress - 3.1
• Dana Point - 3.2
• Fountain Valley - 3.1
• Fullerton - 3.1
• Garden Grove - 3.1
• Huntington Beach - 3.1
• Irvine - 3.1
• La Habra - 3.1
• La Palma - 3.1
• Ladera Ranch - 3.2
• Laguna Beach - 3.2
• Laguna Hills - 3.2
• Laguna Niguel - 3.2
• Laguna Woods - 3.2
• Lake Forest - 3.1
• Las Flores - 3.3
• Los Alamitos - 3.1
• Midway City - 3.1
• Mission Viejo - 3.2
• Modjeska - 3.1
• Newport Beach - 3.2
• North Tustin - 3.1
• Orange - 3.1
• Placentia - 3.2
• Rancho Mission Viejo - 3.3
• Rancho Santa Margarita - 3.1
• Rossmoor - 3.1
• San Clemente - 3.3
• San Juan Capistrano - 3.2
• Santa Ana - 3.1
• Seal Beach - 3.1
• Silverado - 3.1
• Stanton - 3.1
• Trabuco Canyon - 3.1
• Tustin - 3.1
• Villa Park - 3.1
• Westminster - 3.1
• Williams Canyon - 3.1
• Yorba Linda - 3.2