Light pollution in Azerbaijan

3 cities · estimated Bortle class at each city centre

1 of 3 cities read Bortle 8–9 · 2 of 3 cities read Bortle 7–8. The darkest city centre on the list is Sumgayit (Bortle 7–8).

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Cities, brightest first

#	City	Bortle (est.)	Brightness	2 classes darker
1	Baku	8–9	245	~25 km SSE
2	Ganja	7–8	255	~25 km SSW
3	Sumgayit	7–8	255	~25 km N

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.