Calaveras County, CA: Current UV Index and Hourly Forecast

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As of 5:52 PM PDT on October 18, 2025, all 16 cities in Calaveras County, CA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Rancho Calaveras, CA with a reading of 0.7.

Over the next 24 hours, the highest UV Index reading in Calaveras County, CA is expected to be 4.8 in Arnold between 1:00 PM - 2:00 PM PDT tomorrow.

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Current UV Index in Cities in Calaveras County, CA

• Angels - 0.7
• Arnold - 0.7
• Avery - 0.7
• Copperopolis - 0.7
• Dorrington - 0.7
• Forest Meadows - 0.7
• Mokelumne Hill - 0.7
• Mountain Ranch - 0.7
• Murphys - 0.7
• Rail Road Flat - 0.7
• Rancho Calaveras - 0.7
• San Andreas - 0.7
• Vallecito - 0.7
• Valley Springs - 0.7
• Wallace - 0.7
• West Point - 0.7