Great Falls.

The definitive guide to dark skies and celestial observation in Great Falls, MT. Verified using National Park Service and NASA Night Sky Network Clubs data.

Bortle Scale
2
Best Regional Reading
Sky Quality
21.6
SQM Zenith Value
Verified Sites
2
Community Vetted
Dark Sky Parks
2
IDA Certified Nearby

Quick Guide for Great Falls

  • Top Community Pick: Montana WILD (~71.7 miles)
  • Best Scientific Reading: Bortle 3.0 at St Mary’s VC
  • Local Experts: Helena Astronomical Society
  • Verified Observations: 2 distinct spots

Stargazing in Great Falls is surprisingly rewarding if you know exactly where to set up your tripod. While enthusiasts often gather at Montana WILD for its accessibility, scientific audits conducted by the National Park Service at St Mary’s VC provide the most accurate reading of the regional sky quality, measuring at a Bortle 3.0. The local landscape of Great Falls offers several pockets of darkness that are perfect for deep-sky observation.

The Best Times for Stargazing in Great Falls

For the best results in Great Falls, aim for a ‘New Moon’ window. In these dark-sky conditions, the absence of moonlight allows the Milky Way to cast visible shadows.

Expert Tips for Great Falls Observers

Before heading out to Montana WILD, we recommend arriving during civil twilight to scout the terrain safely. A medium-aperture telescope is ideal for resolving the rings of Saturn and bright star clusters at this spot. Local enthusiasts often frequent this spot, making it a great place to meet experienced observers. Regardless of your gear, allow 30 minutes for your eyes to fully dark-adapt.

Local Top Spots

Community-vetted locations known for clear horizons and accessibility for telescopes and astrophotography.

Active Viewing Spot Confidence: 80%

Montana WILD

71.7 mi
Distance

" Standard Advice: Dress in layers as temperatures drop quickly after sunset. Use a red-light flashlight to preserve your night vision. "

Helena, MT 59601
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Community Gathering Point Confidence: 52.5%

Sieben property

62.9 mi
Distance

" Standard Advice: Dress in layers as temperatures drop quickly after sunset. Use a red-light flashlight to preserve your night vision. "

Helena Valley Northeast, MT 59602
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Scientific Audit

NPS Sky Measurements

Instrumented readings from the National Park Service Night Sky Program, providing the most accurate SQM and Bortle classifications.

St Mary's VC

Glacier NP

21.56 SQM
Bortle Class 3

"Some direct glare creating difficulties in dark adapting looking north. M13, 31, and 33 all visible naked eye. SQM measure of 21.77"

Observation Date
8/19/2009
Elevation
1388m
Zenith Brightness
21.62

Logan Pass

Glacier NP

21.6 SQM
Bortle Class 2

"Clear night with very good transparency during the first set. Decreasing transparency for remaining sets. High cirrus move on on N NE horizon. Some airglow sarting in the evening"

Observation Date
8/19/2009
Elevation
2082m
Zenith Brightness
21.39

International Dark Sky Parks

Premier locations certified for their exceptional dark sky quality and commitment to light pollution mitigation.

IDA Certified Distance: 141.7 miles

Waterton-Glacier International Peace Park

Waterton Lakes National Park in Alberta, Canada, and Glacier National Park in Montana, U.S., are collectively the first IDA International Dark Sky Parks…

Category
Dark Sky Park
Certified
2017
Land Area
4,606 km2
Coordinates
48.6875, -113.8051
IDA Certified Distance: 174.1 miles

Lost Trail National Wildlife Refuge

The Lost Trail National Wildlife Refuge is located in Pleasant Valley, nestled in the Salish Mountains of northwestern Montana, United States.

Category
International Dark Sky Sanctuary
Certified
2022
Land Area
37.3 km2
Coordinates
48.1892, -114.9123

Local Astronomy Clubs

Connect with experts and fellow enthusiasts through local astronomical societies and community groups.

NASA Night Sky Club ID
#309

Helena Astronomical Society

Helena, MT

NASA Night Sky Club ID
#329

Southwest Montana Astronomical Society

Bozeman, MT