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Light pollution in Australia

57 cities · estimated Bortle class at each city centre
10 of 57 cities read Bortle 8–9 · 27 of 57 cities read Bortle 7–8 · 18 of 57 cities read Bortle 6–7 · 2 of 57 cities read Bortle 5–6. The darkest city centre on the list is Hervey Bay (Bortle 5–6).
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Cities, brightest first

#CityBortle (est.)Brightness2 classes darker
1Melbourne8–9255~25 km SSW
2Perth8–9255~25 km W
3Blacktown8–9248~25 km NNE
4Bankstown8–9243~25 km S
5Brisbane8–9255~25 km ENE
6Glen Waverley8–9241~25 km SW
7Sydney8–9255~25 km ESE
8St Albans8–9235~25 km S
9Logan City8–9254~25 km ENE
10Adelaide8–9255~25 km WSW
11Canberra7–8252~25 km W
12Narre Warren South7–8189~25 km SSE
13Townsville7–8252~25 km NE
14Craigieburn7–8185~25 km NE
15Gold Coast7–8203~25 km ENE
16Palmerston7–8248~25 km N
17Gladstone7–8255~25 km ESE
18Tuggeranong7–8242~25 km WSW
19Rockhampton7–8255~25 km E
20Mackay7–8253~25 km ENE
21Toowoomba7–8253~25 km ENE
22Darwin7–8227~25 km NW
23Newcastle7–8228~25 km ESE
24Wollongong7–8253~25 km E
25Geelong7–8216~25 km SSE
26Frankston7–8205~25 km WSW
27Sunshine Coast7–8236~25 km E
28Cairns7–8255~25 km ESE
29Point Cook7–8148~25 km SSE
30Maitland7–8222~25 km ENE
31Baldivis7–8174~25 km W
32Ballarat7–8247~25 km ENE
33Bendigo7–8255~25 km SE
34Wodonga7–8244~25 km SSW
35Hobart7–8244~25 km SSE
36Mildura7–8236~25 km E
37Launceston7–8248~25 km E
38Bundaberg6–7236~25 km E
39Geraldton6–7252~25 km W
40Dubbo6–7239~25 km NE
41Bunbury6–7223~25 km WNW
42Caloundra6–7196~25 km E
43Mandurah6–7208~25 km W
44Bathurst6–7236~25 km ENE
45Orange6–7247~25 km W
46Sunbury6–7223~25 km WNW
47Tamworth6–7246~25 km NNE
48Pittwater6–7173~25 km E
49Pakenham6–7189~25 km NE
50Shepparton6–7242~25 km SSE
51Central Coast6–7126~25 km ESE
52Coffs Harbour6–7240~25 km ESE
53Warrnambool6–7207~25 km SSW
54Port Macquarie6–7190~25 km E
55Albany6–7179~25 km SSW
56Blue Mountains5–6139~25 km NNE
57Hervey Bay5–639~25 km NNE

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.