Springfield Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

18.45

Bortle class

Class 8 (Class 8)

Darkness Quotient

27%

Dataset

July 2026

City sky

Springfield: The Practical Verdict

Springfield, a small city nestled in Illinois, is not where you'll find the darkest skies. High light pollution leaves Springfield with a poor city sky for telescopic observing. The urban glow significantly diminishes the visibility of fainter celestial objects.

The sky here erases the Milky Way, limiting stargazers primarily to the Moon, planets, and double stars. While narrowband imaging might capture the brightest nebulae, deeper sky exploration is challenging due to the ever-present sky glow.

For those committed to deeper astronomical exploration, heading to the moderately darker site of 80th Street, Illinois, approximately 130 km to the north-west, provides a substantial improvement in observation conditions.

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

80th Street, Illinois sits about 132 km north west and reaches Bortle 4, roughly 9.9x 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 Stonington, Illinois, about 42 km east south east of Springfield, reaching Bortle 5.

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?

There is not yet enough long-term data to give a confident trend for Springfield.

• Stonington, Illinois

  Direction

  ESE

  Distance (km)

  42.3

  SQM

  20.59

  Bortle

  5

• Johnson Road, Illinois

  Direction

  WSW

  Distance (km)

  21.2

  SQM

  19.20

  Bortle

  7

• Piatt County, Illinois

  Direction

  ENE

  Distance (km)

  95.2

  SQM

  20.52

  Bortle

  5

• Smithboro, Illinois

  Direction

  SSE

  Distance (km)

  104

  SQM

  20.66

  Bortle

  5

• 80th Street, Illinois

  Direction

  NW

  Distance (km)

  132.1

  SQM

  20.94

  Bortle

  4