| # | City | Bortle (est.) | Brightness | 2 classes darker |
|---|---|---|---|---|
| 1 | Dakar | 7–8 | 255 | ~25 km SW |
| 2 | Touba | 7–8 | 254 | ~25 km SSW |
| 3 | Thiès | 7–8 | 254 | ~25 km WNW |
| 4 | Rufisque | 7–8 | 191 | ~25 km S |
| 5 | Kaolack | 6–7 | 232 | ~25 km SSW |
| 6 | Mbour | 6–7 | 230 | ~25 km SW |
| 7 | Saint-Louis | 6–7 | 197 | ~25 km WSW |
| 8 | Ziguinchor | 6–7 | 196 | ~25 km S |
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.