Mariposa County, CA: Current UV Index and Hourly Forecast

As of 11:11 AM PDT on June 26, 2025, out of 17 cities in Mariposa County, CA in our database, 16 cities (94%) have a UV Index reading of Very High, while 1 city (6%) 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 8.5.

Over the next 24 hours, the highest UV Index reading in Mariposa County, CA is expected to be 11.1 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 11:11 AM PDT, June 26, 2025

Current UV Index in Cities in Mariposa County, CA

11:11 AM PDT, June 26, 2025