Pittsburgh Stargazing & Astronomy Report

Light pollution and stargazing locations near Pittsburgh

City
Pittsburgh
Country
United States
Latitude
40.4406
Longitude
-79.9959

Key Sky Quality Metrics

SQM (mag/arcsec²)
17.56
Bortle class
Class 9 (Class 9)
Darkness Quotient
19%
Dataset
August 2026

Inner city sky

Pittsburgh: The Practical Verdict

Pittsburgh, a major city in Pennsylvania, presents a severe challenge for stargazers due to extreme light pollution. The urban sky here offers only minimal opportunities for serious astronomy, severely impacted by the overpowering light dome typical of inner-city environments. As one might expect, the Milky Way is not visible from this location at all.

In such conditions, focusing on observing the Moon, planets, and the brightest stars is practical. Double stars and solar system events are also accessible targets. However, visual deep-sky observing is essentially futile, and widefield views of the Milky Way remain out of reach. Narrowband imaging requires considerable care to avoid overwhelming light pollution.

For those seeking a significant improvement, heading towards Luhrig, Ohio in the south-west is recommended. This site, around 225 km away, offers a Bortle 4 sky, representing a meaningful upgrade for deep-sky pursuits.

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
Luhrig, Ohio sits about 225 km south west and reaches Bortle 4, roughly 23x darker.
Good dark window
Pittsburgh's longest dark windows fall in December and January, with the shortest nights around June and July. Plan deep-sky sessions around the autumn and winter months for the best combination of long nights and true astronomical darkness.

Frequently Asked Questions

Can you see the Milky Way from Pittsburgh?

No. Pittsburgh is a Bortle Class 9 sky with SQM 17.56, 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 Pittsburgh?

Pittsburgh is Bortle Class 9 (SQM 17.56), a severe urban sky for astronomy.

Is Pittsburgh good for stargazing?

Not for serious deep-sky observing. Pittsburgh is a severe urban sky where the Moon, planets, and a handful of bright targets are the realistic options from the city itself.

Is Pittsburgh good for astrophotography?

Broadband deep-sky imaging is heavily compromised from Pittsburgh and a Bortle 4 or darker site is strongly recommended. Even narrowband imaging is difficult from Pittsburgh without careful processing.

What can you observe from Pittsburgh?

Primary targets from Pittsburgh 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 Pittsburgh?

The closest meaningfully darker mapped site is Slippery Rock Township, Pennsylvania, about 58 km west of Pittsburgh, reaching Bortle 6.

When is the sky darkest in Pittsburgh?

The sky over Pittsburgh is darkest around January, December.

Is light pollution in Pittsburgh getting better or worse?

Long-term light pollution over Pittsburgh has been broadly stable across the available measurements.

north - fair

Faint glow on the north horizon. Most stars are visible to low elevation; only the faintest near the ground are affected.

north-north-east - fair

A trace of skyglow near the north-north-east horizon. Stars are clear throughout this direction except very close to the ground.

north-east - fair

A trace of skyglow near the north-east horizon. Stars are clear throughout this direction except very close to the ground.

east-north-east - fair

A faint diffuse glow on the east-north-east horizon. Stars are visible to low elevation, with minor losses near the ground.

east - fair

A faint diffuse glow on the east horizon. Stars are visible to low elevation, with minor losses near the ground.

east-south-east - marginal

Soft skyglow visible on the east-south-east horizon. Mid-brightness stars survive at low elevation; the faintest do not.

south-east - marginal

The south-east lower sky is measurably brighter than the darker quarters. Limit faint work to above about 20 degrees here.

south-south-east - fair

A faint diffuse glow on the south-south-east horizon. Stars are visible to low elevation, with minor losses near the ground.

south - fair

A trace of skyglow near the south horizon. Stars are clear throughout this direction except very close to the ground.

south-south-west - fair

Light glow detectable on the south-south-west horizon. The effect fades quickly with elevation and does not affect overhead work.

south-west - fair

Faint glow on the south-west horizon. Most stars are visible to low elevation; only the faintest near the ground are affected.

west-south-west - fair

The west-south-west sky is broadly dark with a small amount of glow at the horizon. Most objects in this direction are accessible.

west - fair

Light glow detectable on the west horizon. The effect fades quickly with elevation and does not affect overhead work.

west-north-west - fair

Light glow detectable on the west-north-west horizon. The effect fades quickly with elevation and does not affect overhead work.

north-west - fair

The north-west sky is broadly dark with a small amount of glow at the horizon. Most objects in this direction are accessible.

north-north-west - fair

The north-north-west sky is broadly dark with a small amount of glow at the horizon. Most objects in this direction are accessible.

zenith - poor

The overhead sky is washed out by artificial light. Constellation patterns are reduced to their brightest members.

  • Brant Hill, Pennsylvania
    Direction
    SSW
    Distance (km)
    69.6
    SQM
    20.47
    Bortle
    5
  • Slippery Rock Township, Pennsylvania
    Direction
    W
    Distance (km)
    57.6
    SQM
    19.83
    Bortle
    6
  • Mount Pleasant Township, Ohio
    Direction
    WSW
    Distance (km)
    77.6
    SQM
    20.17
    Bortle
    6
  • Springfield Township, Pennsylvania
    Direction
    NW
    Distance (km)
    177.9
    SQM
    20.82
    Bortle
    4
  • Corydon Township, Pennsylvania
    Direction
    NNE
    Distance (km)
    195.9
    SQM
    20.73
    Bortle
    5
  • Luhrig, Ohio
    Direction
    SW
    Distance (km)
    225.1
    SQM
    20.97
    Bortle
    4