Pueblo Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

19.26

Bortle class

Class 7 (Class 7)

Darkness Quotient

36%

Dataset

April 2026

Suburban/urban transition

Pueblo: The Practical Verdict

Pueblo, a small city in southern Colorado, experiences significant urban and suburban sky glow, categorised as high light pollution. This environment offers limited opportunities for visual astronomy, with deep-sky observations largely inaccessible.

The sky from Pueblo mainly supports celestial targets like the Moon, planets, bright open clusters, and double stars. Imaging efforts focusing on narrowband capture of emission nebulae are feasible with careful planning, although broadband astrophotography struggles due to the light pollution. Targets relying on a dark sky, including the Milky Way, remain virtually invisible.

For a meaningful improvement in observing conditions, Montrose County to the west provides an excellent alternative. Around 260 km away, it features substantially darker skies suitable for serious deep-sky astronomy.

At a Glance

Overall

Poor urban/suburban sky - This is a poor sky for astronomy. The Moon, planets, and a few bright objects remain viable, but deep-sky work is difficult.

Milky Way

Not visible - The Milky Way is not realistically visible from this level of light pollution.

Best targets from here

Moon, planets, bright double stars, bright open clusters, narrowband imaging with careful processing

Do not prioritise

visual deep-sky observing, broadband galaxies, reflection nebulae, Milky Way photography

Best nearby upgrade

Montrose County, Colorado sits about 258 km west and reaches Bortle 3, roughly 8.0x darker.

Good dark window

Pueblo'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 Pueblo?

No. Pueblo is a Bortle Class 7 sky with SQM 19.26, 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 Pueblo?

Pueblo is Bortle Class 7 (SQM 19.26), a poor urban/suburban sky for astronomy.

Is Pueblo good for stargazing?

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

Is Pueblo good for astrophotography?

Broadband deep-sky imaging is heavily compromised from Pueblo and a Bortle 4 or darker site is strongly recommended. Narrowband imaging of bright emission nebulae remains viable from Pueblo with appropriate Ha or OIII filters.

What can you observe from Pueblo?

Primary targets from Pueblo include Moon, planets, bright double stars, bright open clusters, narrowband imaging with careful processing. Targets such as visual deep-sky observing, broadband galaxies, reflection nebulae are not realistic from this sky.

Where are darker skies near Pueblo?

The closest meaningfully darker mapped site is Montrose County, Colorado, about 258 km west of Pueblo, reaching Bortle 3.

When is the sky darkest in Pueblo?

The sky over Pueblo is darkest around January, December.

Is light pollution in Pueblo getting better or worse?

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

• Quail Road, Colorado

  Direction

  NNW

  Distance (km)

  26.2

  SQM

  20.25

  Bortle

  6

• Montrose County, Colorado

  Direction

  W

  Distance (km)

  258.3

  SQM

  21.52

  Bortle

  3

• Rio Arriba County, New Mexico

  Direction

  SSW

  Distance (km)

  262.6

  SQM

  21.50

  Bortle

  3