Flathead County, MT: Current UV Index and Hourly Forecast

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As of 9:30 AM MDT on August 18, 2026, all 24 cities in Flathead County, MT in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Niarada, MT with a reading of 0.9.

Over the next 24 hours, the highest UV Index reading in Flathead County, MT is expected to be 6.2 in Marion between 2:00 PM - 3:00 PM MDT today.

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Current UV Index in Cities in Flathead County, MT

• Batavia - 0.7
• Bigfork - 0.8
• Columbia Falls - 0.7
• Coram - 0.8
• Essex - 0.8
• Evergreen - 0.7
• Forest Hill Village - 0.8
• Helena Flats - 0.7
• Hungry Horse - 0.8
• Kalispell - 0.7
• Kila - 0.8
• Lakeside - 0.8
• Little Bitterroot Lake - 0.7
• Marion - 0.7
• Martin City - 0.8
• Niarada - 0.9
• Olney - 0.8
• Pinnacle - 0.8
• Polebridge - 0.8
• Rhodes - 0.7
• Snowslip - 0.8
• Somers - 0.8
• West Glacier - 0.8
• Whitefish - 0.8