| # | City | Bortle (est.) | Brightness | 2 classes darker |
|---|---|---|---|---|
| 1 | Algiers | 8–9 | 255 | ~25 km N |
| 2 | Oran | 8–9 | 255 | ~25 km N |
| 3 | Sétif | 7–8 | 255 | ~25 km NW |
| 4 | Constantine | 7–8 | 255 | ~25 km ENE |
| 5 | Blida | 7–8 | 255 | ~25 km ESE |
| 6 | Batna | 7–8 | 255 | ~25 km SSW |
| 7 | Biskra | 7–8 | 255 | ~25 km SSE |
| 8 | Djelfa | 7–8 | 255 | ~25 km SW |
| 9 | Annaba | 7–8 | 251 | ~25 km NE |
| 10 | Sidi Bel Abbes | 7–8 | 255 | ~25 km NW |
Brightness is the NASA VIIRS Black Marble 2016 value at the city centre on a 0–255 scale; 255 is saturated. Cities are ordered by estimated sky brightness, which also counts the light within 30 km.