Springfield Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

18.45

Bortle class

Class 8 (Class 8)

Darkness Quotient

27%

Dataset

May 2026

City sky

Springfield: The Practical Verdict

Springfield, Illinois, is a small city with considerable light pollution, placing it firmly in the sphere of a poor city sky. For most residents or visiting astronomers within the city limits, the Milky Way is completely invisible due to the overwhelming urban brightness. The primary limiting factor is the significant light dome influenced partly by the glow from St. Louis to the south-south-west.

In these conditions, your observational efforts should focus on the Moon, planets, and bright stars, which can still be quite rewarding. Double stars and solar system events are also within reach, though deep-sky observing is largely unproductive unless narrowband imaging is possible with care. Darker objects such as reflection nebulae and widefield Milky Way views should be avoided here.

For those seeking genuine deep-sky opportunities, Witt, Illinois, to the south-south-east, offers a notable upgrade. It provides a Bortle 4 sky, making it a worthwhile destination for serious observers.

At a Glance

Overall

Poor city sky - This is a poor city sky. The Milky Way is not visible and most deep-sky observing is unrealistic from the location itself.

Milky Way

Not visible - The Milky Way is erased by the bright urban sky background.

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

Witt, Illinois sits about 55 km south south east and reaches Bortle 4, roughly 11x darker.

Good dark window

Springfield'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 Springfield?

No. Springfield is a Bortle Class 8 sky with SQM 18.45, 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 Springfield?

Springfield is Bortle Class 8 (SQM 18.45), a poor city sky for astronomy.

Is Springfield good for stargazing?

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

Is Springfield good for astrophotography?

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

What can you observe from Springfield?

Primary targets from Springfield 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 Springfield?

The closest meaningfully darker mapped site is East 1500 North Road, Illinois, about 50 km east south east of Springfield, reaching Bortle 6.

When is the sky darkest in Springfield?

The sky over Springfield is darkest around January, December.

Is light pollution in Springfield getting better or worse?

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

• Witt, Illinois

  Direction

  SSE

  Distance (km)

  54.5

  SQM

  21.02

  Bortle

  4

• Macoupin County, Illinois

  Direction

  SSW

  Distance (km)

  54.9

  SQM

  20.51

  Bortle

  5

• East 1500 North Road, Illinois

  Direction

  ESE

  Distance (km)

  50.3

  SQM

  20.20

  Bortle

  6

• 10th Street, Illinois

  Direction

  NW

  Distance (km)

  150.2

  SQM

  21.07

  Bortle

  4