Mariposa County, CA: Current UV Index and Hourly Forecast

As of 12:16 PM PDT on October 6, 2025, out of 17 cities in Mariposa County, CA in our database, 11 cities (65%) have a UV Index reading of Moderate, while 6 cities (35%) have a UV Index reading of High. The city with the highest UV Index reading right now is Yosemite Valley, CA with a reading of 6.

Over the next 24 hours, the highest UV Index reading in Mariposa County, CA is expected to be 6.5 in Yosemite Valley between 1:00 PM - 2:00 PM PDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Mariposa County, CA as of 12:16 PM PDT, October 6, 2025

Current UV Index in Cities in Mariposa County, CA

12:16 PM PDT, October 6, 2025