As ever, there are plenty of well-known cities below Lanzhou on today's air quality rankings (Dec 14), published by the Ministry of Environmental Protection.
Out of 86 locations, Lanzhou came 54th. Here is a selection of those places with worse air quality. The ranking is in brackets:
Lanzhou (54)
Xiamen (55)
Qingdao (58)
Guangzhou (60)
Tianjin (61)
Beijing (66)
Urumqi (73)
Chongqing (76)
Xi'an (79)
Harbin (81)
Chengdu (82)
Zhangjiajie (85)
That's not to say the air is pristeen here at the moment, just another reminder that Lanzhou is a pretty average city these days, when it comes to pollution. Here is a photo of Anning District, taken today from the hills: