Ambient Air Quality in Main Cities (2004)

City	Paticulate	Sulphur	Nitrogen	Days of Air Quality
	Matters	Dioxide	Dioxide	Equal to or Above
				Grade II (days)

Beijing	0.149	0.055	0.071	229
Tianjin	0.111	0.073	0.052	299
Shijiazhuang	0.123	0.087	0.042	279
Taiyuan	0.175	0.087	0.022	224
Hohhot	0.080	0.045	0.038	311
Shenyang	0.137	0.052	0.035	301
Dalian	0.085	0.013	0.032	345
Harbin	0.113	0.042	0.060	298
Shanghai	0.099	0.055	0.062	311
Nanjing	0.121	0.045	0.055	295
Hangzhou	0.110	0.049	0.055	292
Hefei	0.110	0.013	0.017	313
Fuzhou	0.074	0.010	0.041	358
Nanchang	0.099	0.057	0.029	330
Jinan	0.149	0.045	0.038	210
Zhengzhou	0.111	0.057	0.037	298
Wuhan	0.130	0.048	0.054	247
Changsha	0.140	0.084	0.033	219
Guangzhou	0.099	0.077	0.073	304
Nanning	0.078	0.061	0.034	348
Haikou	0.033	0.007	0.013	366
Chongqing	0.142	0.113	0.067	243
Chengdu	0.115	0.067	0.048	309
Guiyang	0.083	0.094	0.024	337
Kunming	0.085	0.069	0.040	351
Lhasa	0.052	0.003	0.020	358
Xi'an	0.142	0.049	0.033	260
Lanzhou	0.172	0.071	0.045	204
Xining	0.127	0.024	0.027	280
Yinchuan	0.122	0.054	0.040	323
Urumqi	0.114	0.102	0.058	258

https://allcountries.org/china_statistics/12_7_ambient_air_quality_in_main.html

These tables are based on figures supplied by the National Bureau Of Statistics of the The Peoples Republic Of China and are subject to revision by the National Bureau of Statistics of China.

Copyright © 2006 Photius Coutsoukis and Information Technology Associates, all rights reserved.

Revised 26-April-2006