Scottsdale Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

17.81

Bortle class

Class 9 (Class 9)

Darkness Quotient

21%

Dataset

May 2026

Inner city sky

Scottsdale: The Practical Verdict

Scottsdale, a mid-sized city in Arizona, sits under a sky heavily impacted by its proximity to Phoenix, particularly towards the west-south-west. Under these conditions, the stargazing quality is severely limited, with significant urban light pollution masking more subtle celestial features. The Milky Way is not visible from here, creating a challenging environment for deep-sky observations.

For observers in Scottsdale, the Moon, planets, and double stars offer the most rewarding visual experiences. Bright stars and solar system events can still be appreciated amidst the urban glare, while narrowband imaging might allow glimpses of the brighter nebulae. However, light pollution makes visual deep-sky observing and widefield imaging very unproductive.

For those seeking a truly dark experience, the Escalante Route in Arizona lies about 295 km to the south, offering significantly darker skies. It is a worthwhile undertaking for anyone serious about deep-sky observing who can make the trip.

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

Escalante Route, Arizona sits about 294 km south and reaches Bortle 3, roughly 26x darker.

Good dark window

Scottsdale'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 Scottsdale?

No. Scottsdale is a Bortle Class 9 sky with SQM 17.81, 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 Scottsdale?

Scottsdale is Bortle Class 9 (SQM 17.81), a severe urban sky for astronomy.

Is Scottsdale good for stargazing?

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

Is Scottsdale good for astrophotography?

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

What can you observe from Scottsdale?

Primary targets from Scottsdale 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 Scottsdale?

The closest meaningfully darker mapped site is Ajo, Arizona, about 154 km south west of Scottsdale, reaching Bortle 4.

When is the sky darkest in Scottsdale?

The sky over Scottsdale is darkest around January, December.

Is light pollution in Scottsdale getting better or worse?

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

• Ajo, Arizona

  Direction

  SW

  Distance (km)

  153.7

  SQM

  20.85

  Bortle

  4

• Yavapai County, Arizona

  Direction

  NNW

  Distance (km)

  251.5

  SQM

  20.83

  Bortle

  4

• Escalante Route, Arizona

  Direction

  S

  Distance (km)

  294

  SQM

  21.34

  Bortle

  3