Sierra County, CA: Current UV Index and Hourly Forecast

As of 5:07 AM PDT on September 17, 2025, all 11 cities in Sierra 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 Sierra County, CA is expected to be 7.8 in Verdi 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 5:07 AM PDT, September 17, 2025

Current UV Index in Cities in Sierra County, CA

5:07 AM PDT, September 17, 2025