Light pollution in Greece

17 cities · estimated Bortle class at each city centre

2 of 17 cities read Bortle 8–9 · 14 of 17 cities read Bortle 7–8 · 1 of 17 cities read Bortle 6–7. The darkest city centre on the list is Alexandroupoli (Bortle 6–7).

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Cities, brightest first

#	City	Bortle (est.)	Brightness	2 classes darker
1	Athens	8–9	255	~25 km SSW
2	Thessaloníki	8–9	255	~25 km SW
3	Lárisa	7–8	255	~25 km NE
4	Pátra	7–8	237	~25 km W
5	Chalkída	7–8	252	~25 km NW
6	Tríkala	7–8	253	~25 km W
7	Ioánnina	7–8	255	~25 km NNE
8	Chaniá	7–8	254	~25 km N
9	Irákleion	7–8	249	~25 km N
10	Lamía	7–8	255	~25 km SSW
11	Kateríni	7–8	255	~25 km ESE
12	Kavála	7–8	245	~25 km S
13	Volos	7–8	255	~25 km NNE
14	Kalamata	7–8	254	~25 km S
15	Sérres	7–8	249	~25 km SW
16	Rhodes	7–8	255	~25 km E
17	Alexandroupoli	6–7	255	~25 km SSW

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.