Detroit Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

17.23

Bortle class

Class 9 (Class 9)

Darkness Quotient

17%

Dataset

May 2026

Inner city sky

Detroit: The Practical Verdict

Detroit, Michigan, as a major city, is subject to intense light pollution that severely impacts stargazing. With an extreme light pollution classification, this urban centre offers very few opportunities for the dedicated astronomer aiming for deep-sky observation. The sky here is harshly illuminated, with the primary limiting factor being the significant light dome extending from the city itself.

From such a sky, only the brightest celestial objects can pierce through. The Moon, planets, and bright stars are visible, whereas attempts to observe deep-sky targets like galaxies or nebulae and even meteor showers should be avoided. Even the Milky Way is entirely invisible due to the pervasive urban glow.

For stargazers looking for somewhat improved conditions, travelling southwards could offer marginally better views, possibly around sites like the one located approximately 120 km south. However, the improvement is modest, and the darker sky remains a distant possibility.

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

Limited nearby upgrade

591, Ohio is the strongest nearby option but remains Bortle 5; the improvement is real but modest.

Good dark window

Detroit'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 Detroit?

No. Detroit is a Bortle Class 9 sky with SQM 17.23, 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 Detroit?

Detroit is Bortle Class 9 (SQM 17.23), a severe urban sky for astronomy.

Is Detroit good for stargazing?

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

Is Detroit good for astrophotography?

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

What can you observe from Detroit?

Primary targets from Detroit 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 Detroit?

The closest meaningfully darker mapped site is Erie County, Ohio, about 78 km south south east of Detroit, reaching Bortle 6.

When is the sky darkest in Detroit?

The sky over Detroit is darkest around January, December.

Is light pollution in Detroit getting better or worse?

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

• Erie County, Ohio

  Direction

  SSE

  Distance (km)

  78.2

  SQM

  20.03

  Bortle

  6

• 591, Ohio

  Direction

  S

  Distance (km)

  118.8

  SQM

  20.60

  Bortle

  5

• Lambton Shores, Ontario

  Direction

  NE

  Distance (km)

  135.2

  SQM

  20.55

  Bortle

  5

• Fayette Township, Michigan

  Direction

  WSW

  Distance (km)

  138.7

  SQM

  20.58

  Bortle

  5

• 174 km S

  Direction

  S

  Distance (km)

  173.9

  SQM

  20.50

  Bortle

  5

• 241 km SW

  Direction

  SW

  Distance (km)

  241

  SQM

  20.64

  Bortle

  5