Abstract: Air quality prediction in Wuhan was investigated and air quality was analyzed. The results indicated that air quality in Wuhan is mostly fine and never exceeds light pollution level. The frequency of the fine air quality is 77.6% from 2007 to 2008. Air quality is better in summer than other seasons. The prediction model established by a stepwise regression method has a certain ability to forecast air quality  and the prediction accuracy of air quality grade reaches 78.1%. According to the statistics of the prediction accuracy, this model is suitable to predict air quality with Ⅱ grades. It suggests that the prediction results should be modified by the observational value of air quality in the day before and combining weather forecast results.

Key words: Air quality, Prediction, Stepwise linear regression, Wuhan