Algiers Stargazing & Astronomy Report

Light pollution and stargazing locations near Algiers

City
Algiers
Country
Algeria
Latitude
36.7372
Longitude
3.0865

Key Sky Quality Metrics

SQM (mag/arcsec²)
17.27
Bortle class
Class 9 (Class 9)
Darkness Quotient
18%
Dataset
March 2026

Inner city sky

Stargazing from Algiers

Algiers is Algeria's capital and largest coastal city, spread along the Mediterranean shore in the north of the country.

With a Darkness Quotient of 18%, Algiers falls in the Extreme Light Pollution tier, putting it among the brightest urban skies in the region and firmly in the company of other major city centres where artificial light dominates the night.

From within the city, practical observing is mostly limited to the Moon, the planets, a few brighter stars, and the most conspicuous star clusters. Fainter galaxies, most nebulae, and the Milky Way are largely washed out, and even overhead the sky carries a strong urban glow.

For noticeably better skies, you need to get well clear of the capital's light dome. Around 50 kilometres to the south-east, Mihoub, Médéa offers some improvement, but for a truly dark sky you are looking at a much longer run, roughly 335 kilometres to the south-south-east toward the nearest supplied dark site.

The map crop shows Algiers as a bright, concentrated core with a broad halo of artificial light spreading across the surrounding area. The most intense colours cluster around the city itself, indicating that the light dome is not confined to the centre but spills far into the nearby landscape.

Brightness remains strong in many inland directions close to the city, which matches the experience of a major urban area where the horizon glow reaches high overhead. The more subdued colours only begin to appear farther out, especially away from the densest urban corridors, showing that darker ground does exist but sits well beyond the immediate outskirts.

Compared with its surroundings, Algiers is clearly the dominant source of skyglow in the map. The general pattern suggests that modest improvement comes after leaving the metropolitan area, while genuinely dark conditions are concentrated much farther from the city.

Looking straight up from the city

At the zenith, Algiers measures 17.27 SQM, which corresponds to a very bright inner city sky. Looking straight up, the background is far from black and many of the subtler star fields that give the sky its depth are missing.

The brightest constellations still form recognisable patterns, but they look thinned out, with weaker stars erased by the glow. This is the sort of sky where planets and the Moon remain rewarding, while faint haze-like objects struggle badly even when they are high overhead.

Because the zenith is already so bright, the horizons are more severely affected still. That makes altitude important, with any target low in the sky suffering a heavy penalty from the city's light dome.

north - marginal

Fifteen kilometres to the north, the sky is still marginal, around Bortle 6, so the city's glow remains very obvious. Conditions improve steadily farther out, and genuinely dark skies appear at roughly 100 kilometres in this direction.

north-north-east - marginal

Fifteen kilometres to the north-north-east, you are still under a marginal sky at about Bortle 6. It gets progressively better with distance, with genuinely dark conditions turning up at around 100 kilometres.

north-east - poor

Fifteen kilometres to the north-east, the sky remains poor at about Bortle 7, with heavy skyglow still in charge. You need to keep going well beyond the near outskirts, with dark skies arriving at roughly 100 kilometres.

east-north-east - poor

Fifteen kilometres to the east-north-east, the view is poor, about Bortle 9, and still very heavily affected by urban light. It does improve with distance, but you would need to go out to around 100 kilometres for genuinely dark conditions.

east - poor

Fifteen kilometres to the east, the sky is poor at about Bortle 8, with little relief from the city glow. Even at the edge of the sampled radius this direction only reaches about Bortle 4, so genuinely dark skies are not within the sample radius here.

east-south-east - poor

Fifteen kilometres to the east-south-east, the sky is poor at about Bortle 8 and still strongly washed out. This direction improves only slowly, and genuinely dark skies are not within the sample radius.

south-east - poor

Fifteen kilometres to the south-east, the sky is poor at about Bortle 8, though it begins to improve once you get well away from the city. By around 100 to 200 kilometres it reaches decent rural quality, but genuinely dark skies are not within the sample radius.

south-south-east - poor

Fifteen kilometres to the south-south-east, the sky is poor at about Bortle 8, with strong urban glow still obvious. It improves steadily inland, and genuinely dark conditions show up at around 200 kilometres.

south - poor

Fifteen kilometres to the south, the sky is poor at about Bortle 8. This direction becomes much more promising farther out, with genuinely dark skies arriving at roughly 200 kilometres.

south-south-west - poor

Fifteen kilometres to the south-south-west, the sky is poor at about Bortle 8, despite some improvement over the city centre itself. Dark conditions are reachable in this direction, but only after a long run of about 200 kilometres.

south-west - poor

Fifteen kilometres to the south-west, the sky is poor at about Bortle 8 and still heavily affected by city light. It becomes better with distance, reaching around Bortle 4 by 200 kilometres, but genuinely dark skies are not within the sample radius.

west-south-west - poor

Fifteen kilometres to the west-south-west, the sky is poor at about Bortle 8. This direction does improve farther out, but genuinely dark skies are not within the sample radius and the best sampled result is only around Bortle 5.

west - poor

Fifteen kilometres to the west, the sky is poor at about Bortle 8, so only the brightest objects will cut through cleanly. Conditions become much better farther out, with genuinely dark skies appearing at around 100 kilometres.

west-north-west - poor

Fifteen kilometres to the west-north-west, the sky is poor at about Bortle 8. Keep going far enough and this becomes one of the more effective escape routes, with dark skies at roughly 100 kilometres.

north-west - poor

Fifteen kilometres to the north-west, the sky is poor at about Bortle 7, though it is a touch better than several other directions close to the city. Dark skies are reachable at around 100 kilometres if you continue far enough.

north-north-west - marginal

Fifteen kilometres to the north-north-west, the sky is marginal at about Bortle 6, showing some improvement but still clear urban influence. It keeps getting darker with distance, reaching genuinely dark conditions at about 100 kilometres.

zenith - poor

Looking straight up from Algiers, the zenith is a poor Bortle 9 sky. The main constellation outlines are still visible, but the background remains bright, the fainter stars drop out, and there is little sign of the fine structure that gives a dark sky its depth.

In practice, the city glow reaches all the way overhead rather than sitting only on the horizon. That makes the zenith better than the lowest parts of the sky, but still far too bright for subtle deep sky work.

  • Sidi Boubeker, Médéa
    Direction
    SSW
    Distance (km)
    65.7
    SQM
    20.31
    Bortle
    5
  • Mihoub, Médéa
    Direction
    SE
    Distance (km)
    49
    SQM
    19.47
    Bortle
    7
  • Aïn Bouyahia, Aïn Defla
    Direction
    WSW
    Distance (km)
    121.2
    SQM
    20.35
    Bortle
    5
  • Theniet El Had, Tissemsilt
    Direction
    SW
    Distance (km)
    139
    SQM
    20.73
    Bortle
    5
  • El Mehir, Bordj Bou Arreridj
    Direction
    ESE
    Distance (km)
    129
    SQM
    20.35
    Bortle
    5
  • Aïn Feka, Aïn Oussara
    Direction
    SSE
    Distance (km)
    137.7
    SQM
    20.47
    Bortle
    5

Dark skies are not close to hand from Algiers, and getting beyond the capital's light dome takes more than a short hop out of town.

The nearest clear improvement is about 50 kilometres to the south-east at Mihoub, Médéa, where the sky becomes noticeably better but still far from truly dark. For a much deeper jump in quality, Sidi Boubeker, Médéa around 65 kilometres to the south-south-west reaches a useful rural sky, while the nearest supplied truly dark location lies roughly 335 kilometres to the south-south-east.

  • Within 50 km
    Place
    Pending reverse geocode
    Direction
    SE
    Distance (km)
    49
    SQM
    19.47
    Bortle
    7
  • Within 100 km
    Place
    Pending reverse geocode
    Direction
    SSW
    Distance (km)
    65.7
    SQM
    20.31
    Bortle
    5
  • Within 200 km
    Place
    Pending reverse geocode
    Direction
    SW
    Distance (km)
    139
    SQM
    20.73
    Bortle
    5
  • Within 500 km
    Place
    Pending reverse geocode
    Direction
    SSE
    Distance (km)
    335.9
    SQM
    21.35
    Bortle
    3

Long term light pollution trend

The long term trend points in the wrong direction for stargazers. Algiers has shifted from 17.56 SQM in the earliest dataset to 17.27 SQM in the latest one, with an average of 17.47 SQM across 83 datasets.

That works out to a gradual decline of about 0.0385 SQM per year, which is not dramatic from one year to the next but is noticeable over the full record. In practical terms, the city sky has become a little brighter over time, reinforcing the already difficult conditions for faint deep sky observing.

The spread between the minimum and maximum values shows that conditions do vary, but the overall baseline remains heavily light polluted. For observers in Algiers, short term transparency and local shielding will usually matter more than any expectation of naturally dark overhead skies.

Algiers is best treated as a bright urban observing base rather than a deep sky location. Lunar, planetary, and double star observing work well, and a few bright showcase objects can still be picked out with care.

For deep sky observing, the city imposes severe limits. Once you get out to darker rural areas, the menu opens up quickly, with richer star fields, brighter nebulae, and many more clusters becoming practical targets.

  • Moon
  • planets
  • double stars
  • bright variable stars
  • bright open clusters such as the Pleiades
  • Orion Nebula
  • bright globular clusters
  • Andromeda Galaxy as a faint glow from the best transparent nights
  • a few brighter asterisms and compact clusters
  • Milky Way
  • faint galaxies
  • most nebulae
  • broadband nebulae
  • meteor showers
  • large diffuse objects
  • dark nebulae

Can you see stars from Algiers?

Yes, you can still see stars from Algiers, especially the brighter constellations and standout stars, but the overall number is greatly reduced by the city's light pollution.

Can you see the Milky Way from Algiers?

In normal city conditions, the Milky Way is effectively lost from Algiers. You would need to travel well away from the capital for a realistic chance of seeing it clearly.

What Bortle class is Algiers?

Algiers is Bortle Class 9, which is an inner city sky. That is the brightest end of the scale and explains why faint deep sky objects are so difficult from within the city.

What is the SQM reading for Algiers?

The measured sky brightness is 17.27 SQM. In plain terms, that is a very bright night sky by astronomical standards.

Where are the nearest darker skies?

The nearest supplied darker site is Mihoub, Médéa, about 49 kilometres to the south-east, where conditions improve to Bortle 7. A stronger upgrade comes at Sidi Boubeker, Médéa, around 65.7 kilometres to the south-south-west, while the nearest supplied truly dark site is much farther away, roughly 335 kilometres to the south-south-east.

Is Algiers good for astrophotography?

It is workable for the Moon, planets, and some narrow field targets, but not good for most wide field deep sky astrophotography. The bright background means you need short exposures, strong processing, or a trip to darker ground for better results.

How far do you need to drive from Algiers for darker skies?

For a noticeable improvement, around 50 to 70 kilometres can help. For a good rural sky, something around 100 to 140 kilometres is more useful, and for truly dark conditions the supplied data points to a much longer drive of roughly 335 kilometres.