12-23 Ambient Air Quality in Major Cities (2009) | |||||
(milligram/cu.m) | |||||
City | Particulate | Sulphur | Nitrogen | Days of Air | Proportion of Days of |
Matters | Dioxide | Dioxide | Quality Equal | Air Quality Equal to or | |
to or Above | above Grade II in the | ||||
Grade II (days) | Whole Year (%) | ||||
Beijing | 0.121 | 0.034 | 0.053 | 285 | 78.1 |
Tianjin | 0.101 | 0.056 | 0.040 | 307 | 84.1 |
Shijiazhuang | 0.104 | 0.045 | 0.035 | 318 | 87.1 |
Taiyuan | 0.106 | 0.075 | 0.022 | 296 | 81.1 |
Hohhot | 0.074 | 0.049 | 0.040 | 346 | 94.8 |
Shenyang | 0.110 | 0.059 | 0.037 | 328 | 89.9 |
Changchun | 0.085 | 0.034 | 0.043 | 340 | 93.2 |
Harbin | 0.101 | 0.046 | 0.054 | 311 | 85.2 |
Shanghai | 0.081 | 0.035 | 0.053 | 334 | 91.5 |
Nanjing | 0.100 | 0.035 | 0.048 | 315 | 86.3 |
Hangzhou | 0.097 | 0.041 | 0.052 | 327 | 89.6 |
Hefei | 0.111 | 0.023 | 0.027 | 321 | 87.9 |
Fuzhou | 0.064 | 0.014 | 0.040 | 353 | 96.7 |
Nanchang | 0.079 | 0.054 | 0.037 | 347 | 95.1 |
Jinan | 0.123 | 0.050 | 0.025 | 295 | 80.8 |
Zhengzhou | 0.099 | 0.053 | 0.046 | 322 | 88.2 |
Wuhan | 0.105 | 0.044 | 0.054 | 301 | 82.5 |
Changsha | 0.092 | 0.039 | 0.042 | 333 | 91.2 |
Guangzhou | 0.070 | 0.039 | 0.056 | 347 | 95.1 |
Nanning | 0.050 | 0.032 | 0.028 | 362 | 99.2 |
Haikou | 0.038 | 0.007 | 0.016 | 365 | 100.0 |
Chongqing | 0.105 | 0.053 | 0.037 | 303 | 83.0 |
Chengdu | 0.111 | 0.038 | 0.055 | 315 | 86.3 |
Guiyang | 0.074 | 0.058 | 0.026 | 347 | 95.1 |
Kunming | 0.067 | 0.041 | 0.046 | 365 | 100.0 |
Lhasa | 0.050 | 0.008 | 0.021 | 361 | 98.9 |
Xi'an | 0.113 | 0.048 | 0.046 | 304 | 83.3 |
Lanzhou | 0.150 | 0.059 | 0.043 | 236 | 64.7 |
Xining | 0.141 | 0.042 | 0.032 | 280 | 76.7 |
Yinchuan | 0.090 | 0.044 | 0.031 | 328 | 89.9 |
Urumqi | 0.140 | 0.093 | 0.068 | 262 | 71.8 |