Anchorage Stargazing & Astronomy Report
Light pollution and stargazing locations near Anchorage
- City
- Anchorage
- Country
- United States
- Latitude
- 61.2181
- Longitude
- -149.9003
Key Sky Quality Metrics
- SQM (mag/arcsec²)
- 17.67
- Bortle class
- Class 9 (Class 9)
- Darkness Quotient
- 20%
- Dataset
- April 2026
Inner city sky
Anchorage: The Practical Verdict
Anchorage, a mid-sized city in Alaska, has sky conditions strongly influenced by extreme light pollution, limiting most forms of astronomy. The severe urban glow leaves the Milky Way entirely invisible, and the sky is rated among the brightest urban skies.
From Anchorage, observing options are narrowly confined to bright objects such as the Moon, planets, double stars, and the brightest clusters. Attempting any deep-sky observing or broadband imaging would be challenging due to the intense sky brightness. The east north-east horizon is the most disturbed, while the north-west offers relatively cleaner views.
For significantly darker skies, the Unorganized Borough in Alaska, south-east of the city and classified as Bortle 1, presents a superb upgrade for deep-sky enthusiasts. Planning a trip there is worthwhile for those seeking pristine conditions.
At a Glance
- Overall
- Severe urban sky - This is a severely light-polluted urban sky. Only the Moon, planets, bright stars, and a few specialist targets remain practical.
- Milky Way
- Not visible - The Milky Way is not visible from this sky.
- Best targets from here
- Moon, planets, bright stars, double stars, solar system events, narrowband imaging only with care
- Do not prioritise
- visual deep-sky observing, broadband galaxies, reflection nebulae, widefield Milky Way
- Best nearby upgrade
- Unorganized Borough, Alaska sits about 196 km south east and reaches Bortle 1, roughly 52x darker.
- Moderate dark window
- At this latitude, Anchorage loses true astronomical darkness for a substantial part of the year. Seasonal planning is essential for any serious deep-sky observing or imaging.
Frequently Asked Questions
Can you see the Milky Way from Anchorage?
No. Anchorage is a Bortle Class 9 sky with SQM 17.67, so the Milky Way is not visible from the city. For Milky Way photography, look for a Bortle 4 or darker site.
What Bortle class is Anchorage?
Anchorage is Bortle Class 9 (SQM 17.67), a severe urban sky for astronomy.
Is Anchorage good for stargazing?
Not for serious deep-sky observing. Anchorage is a severe urban sky where the Moon, planets, and a handful of bright targets are the realistic options from the city itself.
Is Anchorage good for astrophotography?
Broadband deep-sky imaging is heavily compromised from Anchorage and a Bortle 4 or darker site is strongly recommended. Even narrowband imaging is difficult from Anchorage without careful processing.
What can you observe from Anchorage?
Primary targets from Anchorage include Moon, planets, bright stars, double stars, solar system events. Targets such as visual deep-sky observing, broadband galaxies, reflection nebulae are not realistic from this sky.
Where are darker skies near Anchorage?
The closest meaningfully darker mapped site is Anchorage, Alaska, about 43 km east south east of Anchorage, reaching Bortle 4.
When is the sky darkest in Anchorage?
The sky over Anchorage is darkest around January, December. Major high-latitude limitation: around 129 nights per year have no true astronomical darkness.
Is light pollution in Anchorage getting better or worse?
Long-term light pollution over Anchorage has been broadly stable across the available measurements.
north - good
Dark sky in the north direction with no obvious skyglow. Suitable for faint-object work at low elevation.
north-north-east - good
No noticeable light pollution to the north-north-east. The sky in this direction is dark to the horizon.
north-east - good
The north-east sky is dark to the horizon. Faint targets are accessible at all elevations here.
east-north-east - fair
Light glow detectable on the east-north-east horizon. The effect fades quickly with elevation and does not affect overhead work.
east - good
The east sky is dark to the horizon. Faint targets are accessible at all elevations here.
east-south-east - good
Dark sky in the east-south-east direction with no obvious skyglow. Suitable for faint-object work at low elevation.
south-east - good
Dark sky in the south-east direction with no obvious skyglow. Suitable for faint-object work at low elevation.
south-south-east - fair
The south-south-east sky is broadly dark with a small amount of glow at the horizon. Most objects in this direction are accessible.
south - good
No noticeable light pollution to the south. The sky in this direction is dark to the horizon.
south-south-west - good
No noticeable light pollution to the south-south-west. The sky in this direction is dark to the horizon.
south-west - good
No noticeable light pollution to the south-west. The sky in this direction is dark to the horizon.
west-south-west - good
The west-south-west horizon is dark. Faint stars are visible close to the ground.
west - good
Dark sky in the west direction with no obvious skyglow. Suitable for faint-object work at low elevation.
west-north-west - good
Dark sky in the west-north-west direction with no obvious skyglow. Suitable for faint-object work at low elevation.
north-west - good
Dark sky in the north-west direction with no obvious skyglow. Suitable for faint-object work at low elevation.
north-north-west - good
Dark horizon to the north-north-west. Faint stars and extended objects in this direction behave much as they do overhead.
zenith - poor
The zenith sky is bright. The Milky Way is absent and most constellation stars are not visible.
-
Anchorage, Alaska
- Direction
- ESE
- Distance (km)
- 43.4
- SQM
- 21.07
- Bortle
- 4
-
Kenai Peninsula Borough, Alaska
- Direction
- SW
- Distance (km)
- 61.4
- SQM
- 21.41
- Bortle
- 3
-
Unorganized Borough, Alaska
- Direction
- ESE
- Distance (km)
- 85.1
- SQM
- 21.61
- Bortle
- 3
-
Kenai Peninsula Borough, Alaska
- Direction
- SE
- Distance (km)
- 95
- SQM
- 21.32
- Bortle
- 3
-
Kenai Peninsula Borough, Alaska
- Direction
- SSW
- Distance (km)
- 118.9
- SQM
- 21.78
- Bortle
- 2
-
Unorganized Borough, Alaska
- Direction
- SE
- Distance (km)
- 195.9
- SQM
- 21.97
- Bortle
- 1