Jefferson County, MT: Current UV Index and Hourly Forecast

As of 2:04 PM MDT on August 30, 2025, all 10 cities in Jefferson County, MT in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Whitehall, MT with a reading of 7.2.

Over the next 24 hours, the highest UV Index reading in Jefferson County, MT is expected to be 7.2 in Whitehall between 2:00 PM - 3:00 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 2:04 PM MDT, August 30, 2025

Current UV Index in Cities in Jefferson County, MT

2:04 PM MDT, August 30, 2025