Orange County, CA: Current UV Index and Hourly Forecast

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As of 10:49 PM PDT on September 10, 2025, all 45 cities in Orange 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 Orange County, CA is expected to be 8.7 in Rancho Santa Margarita between 1:00 PM - 2:00 PM PDT tomorrow.

Search Cities in Orange County, CA

Current UV Index in Cities in Orange County, CA

• Aliso Viejo - 0
• Anaheim - 0
• Brea - 0
• Buena Park - 0
• Costa Mesa - 0
• Coto de Caza - 0
• Cypress - 0
• Dana Point - 0
• Fountain Valley - 0
• Fullerton - 0
• Garden Grove - 0
• Huntington Beach - 0
• Irvine - 0
• La Habra - 0
• La Palma - 0
• Ladera Ranch - 0
• Laguna Beach - 0
• Laguna Hills - 0
• Laguna Niguel - 0
• Laguna Woods - 0
• Lake Forest - 0
• Las Flores - 0
• Los Alamitos - 0
• Midway City - 0
• Mission Viejo - 0
• Modjeska - 0
• Newport Beach - 0
• North Tustin - 0
• Orange - 0
• Placentia - 0
• Rancho Mission Viejo - 0
• Rancho Santa Margarita - 0
• Rossmoor - 0
• San Clemente - 0
• San Juan Capistrano - 0
• Santa Ana - 0
• Seal Beach - 0
• Silverado - 0
• Stanton - 0
• Trabuco Canyon - 0
• Tustin - 0
• Villa Park - 0
• Westminster - 0
• Williams Canyon - 0
• Yorba Linda - 0