Light pollution in Denmark

12 cities · estimated Bortle class at each city centre

1 of 12 cities read Bortle 8–9 · 4 of 12 cities read Bortle 7–8 · 6 of 12 cities read Bortle 6–7 · 1 of 12 cities read Bortle 4–5. The darkest city centre on the list is Klinteby Frihed (Bortle 4–5).

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Cities, brightest first

#	City	Bortle (est.)	Brightness	2 classes darker
1	Copenhagen	8–9	255	~25 km S
2	Århus	7–8	255	~25 km ESE
3	Odense	7–8	255	~25 km NNE
4	Aalborg	7–8	255	~25 km ESE
5	Roskilde	7–8	252	~25 km NW
6	Horsens	6–7	254	~25 km ESE
7	Randers	6–7	246	~25 km ENE
8	Vejle	6–7	235	~25 km ESE
9	Herning	6–7	224	~25 km NE
10	Esbjerg	6–7	236	~25 km SSW
11	Kolding	6–7	236	~25 km SE
12	Klinteby Frihed	4–5	22	not within 90 km

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.