Gallatin County, MT: Current UV Index and Hourly Forecast

As of 11:51 AM MDT on June 4, 2025, out of 18 cities in Gallatin County, MT in our database, 13 cities (72%) have a UV Index reading of Moderate, while 5 cities (28%) have a UV Index reading of High. The city with the highest UV Index reading right now is Big Sky, MT with a reading of 5.9.

Over the next 24 hours, the highest UV Index reading in Gallatin County, MT is expected to be 8.6 in West Yellowstone between 1:00 PM - 2:00 PM MDT today.

Search Cities in Gallatin County, MT

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Gallatin County, MT as of 11:51 AM MDT, June 4, 2025

Current UV Index in Cities in Gallatin County, MT

11:51 AM MDT, June 4, 2025