11-23 Ambient Air Quality in Major Cities (2008) | |||||
(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 | 0.123 | 0.036 | 0.049 | 274 | 0.75 |
Tianjin | 0.088 | 0.061 | 0.041 | 322 | 0.88 |
Shijiazhuang | 0.116 | 0.046 | 0.031 | 301 | 0.82 |
Taiyuan | 0.094 | 0.073 | 0.021 | 303 | 0.83 |
Hohhot | 0.070 | 0.049 | 0.045 | 340 | 0.93 |
Shenyang | 0.118 | 0.059 | 0.037 | 323 | 0.88 |
Changchun | 0.096 | 0.030 | 0.038 | 342 | 0.94 |
Harbin | 0.102 | 0.043 | 0.055 | 308 | 0.84 |
Shanghai | 0.084 | 0.051 | 0.056 | 328 | 0.90 |
Nanjing | 0.098 | 0.054 | 0.053 | 322 | 0.88 |
Hangzhou | 0.110 | 0.052 | 0.053 | 301 | 0.82 |
Hefei | 0.134 | 0.022 | 0.025 | 257 | 0.70 |
Fuzhou | 0.071 | 0.023 | 0.046 | 354 | 0.97 |
Nanchang | 0.083 | 0.050 | 0.036 | 344 | 0.94 |
Jinan | 0.126 | 0.052 | 0.022 | 295 | 0.81 |
Zhengzhou | 0.094 | 0.060 | 0.047 | 325 | 0.89 |
Wuhan | 0.113 | 0.051 | 0.054 | 294 | 0.81 |
Changsha | 0.097 | 0.053 | 0.043 | 329 | 0.90 |
Guangzhou | 0.071 | 0.046 | 0.056 | 345 | 0.95 |
Nanning | 0.056 | 0.040 | 0.044 | 352 | 0.96 |
Haikou | 0.043 | 0.009 | 0.017 | 366 | 1.00 |
Chongqing | 0.106 | 0.063 | 0.043 | 297 | 0.81 |
Chengdu | 0.111 | 0.049 | 0.052 | 319 | 0.87 |
Guiyang | 0.082 | 0.064 | 0.023 | 347 | 0.95 |
Kunming | 0.067 | 0.051 | 0.039 | 366 | 1.00 |
Lhasa | 0.051 | 0.005 | 0.024 | 353 | 0.97 |
Xi'an | 0.113 | 0.050 | 0.044 | 301 | 0.82 |
Lanzhou | 0.132 | 0.070 | 0.054 | 268 | 0.73 |
Xining | 0.118 | 0.029 | 0.030 | 296 | 0.81 |
Yinchuan | 0.084 | 0.049 | 0.021 | 330 | 0.90 |
Urumqi | 0.145 | 0.105 | 0.065 | 261 | 0.72 |