Berkeley Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

18.48

Bortle class

Class 8 (Class 8)

Darkness Quotient

27%

Dataset

July 2026

City sky

Berkeley: The Practical Verdict

Berkeley in California is a small city characterised by its suburban landscape. Currently, the sky is heavily impacted by high light pollution, making it a poor location for serious stargazing. Only the most visible celestial objects are noticeable due to the illumination from local and nearby regions, such as San Francisco to the south-west. The dominant limiting factor is this extensive light pollution which erases the Milky Way from view entirely.

Observing in Berkeley allows for viewing the Moon, planets, and bright stars, but deep-sky observing will be frustrating. Double stars and solar system events can still be appreciated, yet attempts at observing faint nebulae and galaxies would be unproductive. Narrowband imaging is possible with care, focusing on the brightest objects.

To achieve noticeably darker skies for deep-sky observing, you would do well to consider heading to a location about 55 km west north-west, namely 26090, California. This site presents a significant drop in light pollution and a much more conducive environment for examining fainter celestial targets.

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

26090, California sits about 55 km west north west and reaches Bortle 4, roughly 10x darker.

Good dark window

Berkeley'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 Berkeley?

No. Berkeley is a Bortle Class 8 sky with SQM 18.48, 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 Berkeley?

Berkeley is Bortle Class 8 (SQM 18.48), a poor city sky for astronomy.

Is Berkeley good for stargazing?

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

Is Berkeley good for astrophotography?

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

What can you observe from Berkeley?

Primary targets from Berkeley 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 Berkeley?

The closest meaningfully darker mapped site is Deer Park Fire Road, California, about 27 km west of Berkeley, reaching Bortle 6.

When is the sky darkest in Berkeley?

The sky over Berkeley is darkest around January, December.

Is light pollution in Berkeley getting better or worse?

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

• Deer Park Fire Road, California

  Direction

  W

  Distance (km)

  27.1

  SQM

  20.12

  Bortle

  6

• 26090, California

  Direction

  WNW

  Distance (km)

  54.6

  SQM

  21.03

  Bortle

  4

• Contra Costa County, California

  Direction

  E

  Distance (km)

  48.1

  SQM

  19.94

  Bortle

  6

• Rio Vista, California

  Direction

  ENE

  Distance (km)

  53.8

  SQM

  19.90

  Bortle

  6

• Santa Rosa, California

  Direction

  NNW

  Distance (km)

  84.5

  SQM

  20.65

  Bortle

  5

• 4604, California

  Direction

  E

  Distance (km)

  45.2

  SQM

  19.61

  Bortle

  6