12-23 Ambient Air Quality in Major Cities (2010) | |||||
(milligram/cu.m) | |||||
City | Proportion of Days of | ||||
Particulate | Sulphur | Nitrogen | Days of Air Quality | Air Quality Equal to or | |
Matters | Dioxide | Dioxide | Equal to or Above | above Grade II in the | |
Grade II (days) | Whole Year (%) | ||||
Beijing | 0.121 | 0.032 | 0.057 | 286 | 78.4 |
Tianjin | 0.096 | 0.054 | 0.045 | 308 | 84.4 |
Shijiazhuang | 0.098 | 0.054 | 0.041 | 319 | 87.4 |
Taiyuan | 0.089 | 0.068 | 0.020 | 304 | 83.3 |
Hohhot | 0.068 | 0.046 | 0.034 | 349 | 95.6 |
Shenyang | 0.101 | 0.058 | 0.035 | 329 | 90.1 |
Changchun | 0.089 | 0.030 | 0.044 | 341 | 93.4 |
Harbin | 0.101 | 0.045 | 0.048 | 313 | 85.8 |
Shanghai | 0.079 | 0.029 | 0.050 | 336 | 92.1 |
Nanjing | 0.114 | 0.036 | 0.046 | 302 | 82.7 |
Hangzhou | 0.098 | 0.034 | 0.056 | 314 | 86.0 |
Hefei | 0.115 | 0.020 | 0.030 | 310 | 84.9 |
Fuzhou | 0.073 | 0.009 | 0.032 | 351 | 96.2 |
Nanchang | 0.087 | 0.055 | 0.042 | 343 | 94.0 |
Jinan | 0.117 | 0.045 | 0.027 | 308 | 84.4 |
Zhengzhou | 0.111 | 0.053 | 0.046 | 318 | 87.1 |
Wuhan | 0.108 | 0.041 | 0.057 | 284 | 77.8 |
Changsha | 0.083 | 0.040 | 0.046 | 338 | 92.6 |
Guangzhou | 0.069 | 0.033 | 0.053 | 357 | 97.8 |
Nanning | 0.069 | 0.028 | 0.030 | 349 | 95.6 |
Haikou | 0.040 | 0.007 | 0.015 | 365 | 100.0 |
Chongqing | 0.102 | 0.048 | 0.039 | 311 | 85.2 |
Chengdu | 0.104 | 0.031 | 0.051 | 316 | 86.6 |
Guiyang | 0.075 | 0.057 | 0.027 | 343 | 94.0 |
Kunming | 0.072 | 0.040 | 0.046 | 365 | 100.0 |
Lhasa | 0.048 | 0.007 | 0.021 | 361 | 98.9 |
Xi'an | 0.126 | 0.043 | 0.045 | 304 | 83.3 |
Lanzhou | 0.155 | 0.057 | 0.048 | 223 | 61.1 |
Xining | 0.124 | 0.039 | 0.026 | 312 | 85.5 |
Yinchuan | 0.093 | 0.039 | 0.026 | 332 | 91.0 |
Urumqi | 0.133 | 0.089 | 0.067 | 266 | 72.9 |