Light pollution in Norway

13 cities · estimated Bortle class at each city centre

1 of 13 cities read Bortle 8–9 · 11 of 13 cities read Bortle 7–8 · 1 of 13 cities read Bortle 6–7. The darkest city centre on the list is Ålesund (Bortle 6–7).

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Cities, brightest first

#	City	Bortle (est.)	Brightness	2 classes darker
1	Oslo	8–9	255	~25 km NNW
2	Lillestrøm	7–8	255	~25 km SSE
3	Bergen	7–8	255	~25 km W
4	Asker	7–8	251	~25 km N
5	Stavanger	7–8	255	~25 km W
6	Drammen	7–8	231	~25 km N
7	Tønsberg	7–8	255	~25 km SE
8	Trondheim	7–8	255	~25 km NNW
9	Fredrikstad	7–8	255	~25 km SSW
10	Sandefjord	7–8	255	~25 km SE
11	Skien	7–8	250	~25 km W
12	Kristiansand	7–8	255	~25 km SSE
13	Ålesund	6–7	232	~25 km WNW

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.