Algiers Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

17.19

Bortle class

Class 9 (Class 9)

Darkness Quotient

17%

Dataset

April 2026

Inner city sky

Algiers: The Practical Verdict

Algiers, a dense urban centre in Algeria, presents severe challenges for stargazing due to its extreme light pollution. The city's sky ranks as Bortle Class 9, offering a severely washed-out view where the Milky Way is entirely obscured and only the brightest celestial objects are discernible.

Under such conditions, practical targets include lunar features, visible planets, double stars, and bright stars. Solar system events can be followed, and narrowband imaging is viable but requires careful filtering. Deep-sky observation is largely impractical here.

For enthusiasts seeking darker horizons, El Guedid in Djelfa, located approximately 225 km south, provides significantly improved skies with a Bortle 4 rating. A visit to such a site is worthwhile for clearer views of faint deep-sky objects and a glimpse of the Milky Way.

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

El Guedid, Djelfa sits about 224 km south and reaches Bortle 4, roughly 43x darker.

Good dark window

Algiers'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 Algiers?

No. Algiers is a Bortle Class 9 sky with SQM 17.19, 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 Algiers?

Algiers is Bortle Class 9 (SQM 17.19), a severe urban sky for astronomy.

Is Algiers good for stargazing?

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

Is Algiers good for astrophotography?

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

What can you observe from Algiers?

Primary targets from Algiers 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 Algiers?

The closest meaningfully darker mapped site is Nahata, Bouira, about 36 km south east of Algiers, reaching Bortle 7.

When is the sky darkest in Algiers?

The sky over Algiers is darkest around January, December.

Is light pollution in Algiers getting better or worse?

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

• Nahata, Bouira

  Direction

  SE

  Distance (km)

  35.6

  SQM

  19.22

  Bortle

  7

• Berrouaghia, Médéa

  Direction

  S

  Distance (km)

  71.6

  SQM

  20.20

  Bortle

  6

• Messelmoun, Tipaza

  Direction

  WSW

  Distance (km)

  105.7

  SQM

  20.33

  Bortle

  5

• El Haouch, Bordj Bou Arreridj

  Direction

  ESE

  Distance (km)

  142.7

  SQM

  20.32

  Bortle

  5

• El Guedid, Djelfa

  Direction

  S

  Distance (km)

  223.6

  SQM

  21.27

  Bortle

  4

• Oued Rhiou, Relizane

  Direction

  WSW

  Distance (km)

  211.3

  SQM

  20.53

  Bortle

  5