Peoria Stargazing & Astronomy Report
Light pollution and stargazing locations near Peoria
- City
- Peoria
- Country
- United States
- Latitude
- 33.5806
- Longitude
- -112.2374
Key Sky Quality Metrics
- SQM (mag/arcsec²)
- 17.96
- Bortle class
- Class 9 (Class 9)
- Darkness Quotient
- 23%
- Dataset
- July 2026
Inner city sky
Peoria: The Practical Verdict
Peoria, a small city in Arizona, offers considerable light pollution typical of urban environments. The overall sky quality is severe, and the Milky Way is not visible here. Urban development contributes to these challenging conditions, limiting the appeal for deep-sky enthusiasts.
The Moon, planets, and bright stars are the main viable targets in Peoria's heavily light-polluted skies. Observers must navigate intense background light, and faint nebulae and broadband galaxies remain largely invisible. For imaging, narrowband filters are essential due to the overwhelming light pollution from the city.
For a significantly darker sky, travelling to Pima County, about 165 km south-south-west, provides a solid upgrade for serious observing. Its Bortle class 4 skies offer much better conditions for deep-sky targets and greater overall visibility.
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
- Pima County, Arizona sits about 164 km south south west and reaches Bortle 4, roughly 21x darker.
- Good dark window
- Peoria'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 Peoria?
No. Peoria is a Bortle Class 9 sky with SQM 17.96, 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 Peoria?
Peoria is Bortle Class 9 (SQM 17.96), a severe urban sky for astronomy.
Is Peoria good for stargazing?
Not for serious deep-sky observing. Peoria is a severe urban sky where the Moon, planets, and a handful of bright targets are the realistic options from the city itself.
Is Peoria good for astrophotography?
Broadband deep-sky imaging is heavily compromised from Peoria and a Bortle 4 or darker site is strongly recommended. Even narrowband imaging is difficult from Peoria without careful processing.
What can you observe from Peoria?
Primary targets from Peoria 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 Peoria?
The closest meaningfully darker mapped site is Pima County, Arizona, about 164 km south south west of Peoria, reaching Bortle 4.
When is the sky darkest in Peoria?
The sky over Peoria is darkest around January, December.
Is light pollution in Peoria getting better or worse?
There is not yet enough long-term data to give a confident trend for Peoria.
north - marginal
Noticeable glow on the north horizon. Stars below about 20 degrees in this direction are dimmed.
north-north-east - marginal
The north-north-east sky shows a clear glow near the ground. Above about 20 degrees the sky returns to workable.
north-east - marginal
Soft skyglow visible on the north-east horizon. Mid-brightness stars survive at low elevation; the faintest do not.
east-north-east - marginal
Soft skyglow visible on the east-north-east horizon. Mid-brightness stars survive at low elevation; the faintest do not.
east - marginal
Noticeable glow on the east horizon. Stars below about 20 degrees in this direction are dimmed.
east-south-east - poor
The east-south-east horizon shows a strong orange-white glow. Star counts drop sharply below about 25 degrees here.
south-east - poor
The south-east horizon shows a strong orange-white glow. Star counts drop sharply below about 25 degrees here.
south-south-east - poor
The south-south-east sky is washed out near the horizon. Most constellation stars in the lower sky here are not visible.
south - poor
Heavy light pollution to the south. The lower 30 degrees of sky in this direction are unusable for faint targets.
south-south-west - poor
The lower south-south-west sky is heavily light-polluted. Only the brightest stars stand out near the horizon.
south-west - marginal
Noticeable glow on the south-west horizon. Stars below about 20 degrees in this direction are dimmed.
west-south-west - marginal
Noticeable glow on the west-south-west horizon. Stars below about 20 degrees in this direction are dimmed.
west - marginal
Soft skyglow visible on the west horizon. Mid-brightness stars survive at low elevation; the faintest do not.
west-north-west - marginal
A diffuse glow sits on the west-north-west horizon. Faint objects below 20 degrees in this direction are compromised.
north-west - marginal
A diffuse glow sits on the north-west horizon. Faint objects below 20 degrees in this direction are compromised.
north-north-west - marginal
The north-north-west lower sky is measurably brighter than the darker quarters. Limit faint work to above about 20 degrees here.
zenith - poor
The zenith sky background is high. Most faint stars are absent and the Milky Way cannot be seen.
-
Pima County, Arizona
- Direction
- SSW
- Distance (km)
- 163.6
- SQM
- 21.28
- Bortle
- 4
-
Mohave County, Arizona
- Direction
- NW
- Distance (km)
- 210.4
- SQM
- 21.00
- Bortle
- 4
-
Riverside County, California
- Direction
- W
- Distance (km)
- 222.8
- SQM
- 20.53
- Bortle
- 5