Jefferson County, MT: Current UV Index and Hourly Forecast

As of 12:16 AM MDT on August 10, 2025, all 10 cities in Jefferson County, MT 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 Jefferson County, MT is expected to be 8.8 in Whitehall between 1:00 PM - 2:00 PM MDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Jefferson County, MT as of 12:16 AM MDT, August 10, 2025

Current UV Index in Cities in Jefferson County, MT

12:16 AM MDT, August 10, 2025