Baltimore Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

16.89

Bortle class

Class 9 (Class 9)

Darkness Quotient

15%

Dataset

July 2026

Inner city sky

Baltimore: The Practical Verdict

Baltimore, as a major urban centre in Maryland, suffers from significant light pollution that severely impacts astronomical observations. The overall sky quality here is characterised as a severe urban sky, with the Milky Way completely obscured. This is primarily due to the city's own light dome and the nearby presence of Washington, D.C., adding to the sky glow.

Despite these challenges, stargazers can focus on bright targets such as the Moon, visible planets, and double stars. Solar system events and narrowband imaging remain practicable with care, but serious deep-sky visual observing should be avoided as faint objects are lost in the sky's brightness.

For those seeking darker skies, travelling to Miskimon, Virginia is recommended. Located roughly 165 km to the south, it offers a marked improvement with its Bortle 4 designation, making it a worthwhile trip for keen observers.

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

Miskimon, Virginia sits about 163 km south and reaches Bortle 4, roughly 51x darker.

Good dark window

Baltimore'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 Baltimore?

No. Baltimore is a Bortle Class 9 sky with SQM 16.89, 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 Baltimore?

Baltimore is Bortle Class 9 (SQM 16.89), a severe urban sky for astronomy.

Is Baltimore good for stargazing?

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

Is Baltimore good for astrophotography?

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

What can you observe from Baltimore?

Primary targets from Baltimore 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 Baltimore?

The closest meaningfully darker mapped site is Glenn Hill, Maryland, about 57 km north west of Baltimore, reaching Bortle 6.

When is the sky darkest in Baltimore?

The sky over Baltimore is darkest around January, December.

Is light pollution in Baltimore getting better or worse?

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

• Union Corner, Maryland

  Direction

  ESE

  Distance (km)

  71.1

  SQM

  20.52

  Bortle

  5

• Glenn Hill, Maryland

  Direction

  NW

  Distance (km)

  56.6

  SQM

  19.68

  Bortle

  6

• Pleasant View, Pennsylvania

  Direction

  ENE

  Distance (km)

  66.7

  SQM

  19.77

  Bortle

  6

• Maxwell Hall, Maryland

  Direction

  S

  Distance (km)

  86.5

  SQM

  20.10

  Bortle

  6

• Vienna, Maryland

  Direction

  SE

  Distance (km)

  113.3

  SQM

  20.82

  Bortle

  4

• Miskimon, Virginia

  Direction

  S

  Distance (km)

  162.5

  SQM

  21.15

  Bortle

  4