Abstract: Air quality index (AQI) is a dimensionless index which describes air condition quantitatively. It can be used to evaluate the quality of atmospheric environment as well as control contamination. In this paper, to investigate the influence of atmospheric pollution indexes on AQI, three cities of China, namely, Beijing, Changsha and Haikou, are chosen for your consideration. Six kinds of at-mospheric pollution index contains PM2.5 of daily date are used as observation. On the one hand, partial correlation analysis is employed for each index of the three cities respectively to deter-min...
