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

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As of 4:38 AM PDT on October 31, 2026, all 52 cities in San Bernardino 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 San Bernardino County, CA is expected to be 3.7 in Big Bear City between 12:00 PM - 1:00 PM PDT today.

Search Cities in San Bernardino County, CA

Current UV Index in Cities in San Bernardino County, CA

• Adelanto - 0
• Apple Valley - 0
• Baker - 0
• Barstow - 0
• Big Bear City - 0
• Big Bear Lake - 0
• Big River - 0
• Bloomington - 0
• Bluewater - 0
• Chino - 0
• Chino Hills - 0
• Colton - 0
• Crestline - 0
• Fontana - 0
• Fort Irwin - 0
• Grand Terrace - 0
• Hesperia - 0
• Highland - 0
• Homestead Valley - 0
• Joshua Tree - 0
• Lake Arrowhead - 0
• Lenwood - 0
• Loma Linda - 0
• Lucerne Valley - 0
• Lytle Creek - 0
• Mentone - 0
• Montclair - 0
• Morongo Valley - 0
• Mountain View Acres - 0
• Muscoy - 0
• Needles - 0
• Oak Glen - 0
• Oak Hills - 0
• Ontario - 0
• Phelan - 0
• Piñon Hills - 0
• Rancho Cucamonga - 0
• Redlands - 0
• Rialto - 0
• Running Springs - 0
• San Antonio Heights - 0
• San Bernardino - 0
• Searles Valley - 0
• Silver Lakes - 0
• Spring Valley Lake - 0
• Twentynine Palms - 0
• Upland - 0
• Victorville - 0
• Wrightwood - 0
• Yermo - 0
• Yucaipa - 0
• Yucca Valley - 0