Sierra County, CA: Current UV Index and Hourly Forecast

As of 7:43 AM PDT on April 11, 2025, all 11 cities in Sierra County, CA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Loyalton, CA with a reading of 0.1.

Over the next 24 hours, the highest UV Index reading in Sierra County, CA is expected to be 8.4 in Sierraville 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 Sierra County, CA as of 7:43 AM PDT, April 11, 2025

Current UV Index in Cities in Sierra County, CA

7:43 AM PDT, April 11, 2025