Light pollution in Madagascar

5 cities · estimated Bortle class at each city centre

1 of 5 cities read Bortle 7–8 · 3 of 5 cities read Bortle 6–7 · 1 of 5 cities read Bortle 5–6. The darkest city centre on the list is Fianarantsoa (Bortle 5–6).

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Cities, brightest first

#	City	Bortle (est.)	Brightness	2 classes darker
1	Antananarivo	7–8	255	~25 km ENE
2	Toamasina	6–7	253	~25 km ESE
3	Mahajanga	6–7	252	~25 km N
4	Antsirabe	6–7	212	~25 km NNE
5	Fianarantsoa	5–6	106	~50 km NE

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.