Cascade County, MT: Current UV Index and Hourly Forecast

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As of 6:39 PM MDT on September 21, 2026, all 24 cities in Cascade County, MT in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Great Falls, MT with a reading of 0.5.

Over the next 24 hours, the highest UV Index reading in Cascade County, MT is expected to be 5.2 in Neihart between 1:00 PM - 2:00 PM MDT tomorrow.

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Current UV Index in Cities in Cascade County, MT

• Belt - 0.5
• Big Stone Colony - 0.5
• Black Eagle - 0.5
• Cascade - 0.5
• Cascade Colony - 0.5
• Centerville - 0.5
• Fair Haven Colony - 0.5
• Fort Shaw - 0.5
• Gibson Flats - 0.5
• Great Falls - 0.5
• Hardy - 0.5
• Malmstrom AFB - 0.5
• Monarch - 0.5
• Neihart - 0.5
• Pleasant Valley Colony - 0.5
• Riceville - 0.5
• Sand Coulee - 0.5
• Simms - 0.5
• Stockett - 0.5
• Sun Prairie - 0.5
• Sun River - 0.5
• Tracy - 0.5
• Ulm - 0.5
• Vaughn - 0.5