Lake County, MT: Current UV Index and Hourly Forecast

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As of 2:40 PM MDT on July 10, 2026, all 23 cities in Lake County, MT in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is St. Ignatius, MT with a reading of 9.5.

Over the next 24 hours, the highest UV Index reading in Lake County, MT is expected to be 9.5 in St. Ignatius between 2:00 PM - 3:00 PM MDT today.

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Current UV Index in Cities in Lake County, MT

• Arlee - 9.5
• Bear Dance - 9.2
• Big Arm - 9.1
• Charlo - 9.1
• Dayton - 9.1
• Elmo - 9.1
• Finley Point - 9.3
• Jette - 9.1
• Kerr - 9.1
• Kicking Horse - 9.4
• Kings Point - 9.1
• Lake Mary Ronan - 9.3
• Lindisfarne - 9.1
• Pablo - 9.4
• Polson - 9.1
• Ravalli - 9.3
• Rocky Point - 9.1
• Rollins - 9.2
• Ronan - 9.4
• St. Ignatius - 9.5
• Swan Lake - 9.5
• Turtle Lake - 9.3
• Woods Bay - 9.2