Orange County, CA: Current UV Index and Hourly Forecast

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As of 2:29 PM PDT on May 14, 2025, all 45 cities in Orange County, CA in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Rancho Santa Margarita, CA with a reading of 8.8.

Over the next 24 hours, the highest UV Index reading in Orange County, CA is expected to be 8.8 in Rancho Santa Margarita between 2:00 PM - 3:00 PM PDT today.

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Current UV Index in Cities in Orange County, CA

• Aliso Viejo - 8.6
• Anaheim - 8.5
• Brea - 8.5
• Buena Park - 8.4
• Costa Mesa - 8.4
• Coto de Caza - 8.7
• Cypress - 8.4
• Dana Point - 8.6
• Fountain Valley - 8.4
• Fullerton - 8.4
• Garden Grove - 8.4
• Huntington Beach - 8.4
• Irvine - 8.5
• La Habra - 8.4
• La Palma - 8.4
• Ladera Ranch - 8.6
• Laguna Beach - 8.6
• Laguna Hills - 8.6
• Laguna Niguel - 8.6
• Laguna Woods - 8.6
• Lake Forest - 8.5
• Las Flores - 8.7
• Los Alamitos - 8.4
• Midway City - 8.4
• Mission Viejo - 8.6
• Modjeska - 8.5
• Newport Beach - 8.6
• North Tustin - 8.5
• Orange - 8.5
• Placentia - 8.5
• Rancho Mission Viejo - 8.7
• Rancho Santa Margarita - 8.8
• Rossmoor - 8.4
• San Clemente - 8.7
• San Juan Capistrano - 8.6
• Santa Ana - 8.4
• Seal Beach - 8.4
• Silverado - 8.5
• Stanton - 8.4
• Trabuco Canyon - 8.8
• Tustin - 8.5
• Villa Park - 8.5
• Westminster - 8.4
• Williams Canyon - 8.5
• Yorba Linda - 8.5