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

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As of 4:22 PM PST on November 12, 2025, all 52 cities in San Bernardino County, CA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Victorville, CA with a reading of 0.3.

Over the next 24 hours, the highest UV Index reading in San Bernardino County, CA is expected to be 4.8 in Big Bear City between 12:00 PM - 1:00 PM PST tomorrow.

Search Cities in San Bernardino County, CA

Current UV Index in Cities in San Bernardino County, CA

• Adelanto - 0.3
• Apple Valley - 0.3
• Baker - 0.1
• Barstow - 0.3
• Big Bear City - 0.3
• Big Bear Lake - 0.3
• Big River - 0.2
• Bloomington - 0.3
• Bluewater - 0.2
• Chino - 0.3
• Chino Hills - 0.3
• Colton - 0.3
• Crestline - 0.3
• Fontana - 0.3
• Fort Irwin - 0.3
• Grand Terrace - 0.3
• Hesperia - 0.3
• Highland - 0.3
• Homestead Valley - 0.3
• Joshua Tree - 0.3
• Lake Arrowhead - 0.3
• Lenwood - 0.3
• Loma Linda - 0.3
• Lucerne Valley - 0.2
• Lytle Creek - 0.3
• Mentone - 0.3
• Montclair - 0.3
• Morongo Valley - 0.3
• Mountain View Acres - 0.3
• Muscoy - 0.3
• Needles - 0.2
• Oak Glen - 0.3
• Oak Hills - 0.3
• Ontario - 0.3
• Phelan - 0.3
• Piñon Hills - 0.3
• Rancho Cucamonga - 0.3
• Redlands - 0.3
• Rialto - 0.3
• Running Springs - 0.3
• San Antonio Heights - 0.3
• San Bernardino - 0.3
• Searles Valley - 0.3
• Silver Lakes - 0.3
• Spring Valley Lake - 0.3
• Twentynine Palms - 0.2
• Upland - 0.3
• Victorville - 0.3
• Wrightwood - 0.3
• Yermo - 0.3
• Yucaipa - 0.3
• Yucca Valley - 0.3