Assessment on Air Quality Characteristics in Xuancheng and Its Relation with Meteorological Conditions

Based on the monitoring both of API( air pollution index) and ground meteorological data in Xuancheng during 2006- 2013 were analyzed,and the relationships between the API and ground meteorological factors were statistical analyzed by SPSS. The results indicated the overall air quality is better in Xuancheng. The grade ofⅠandⅡair quality primarily occurred. GradeⅡwas partly accounted for 77. 9%,grade Ⅲ and oversteps were 170 days in all that was accounted for 5. 8%. The primary pollution was PM10 and worse than before from 2012. Weekend effect index of API mainly concentrated- 20- 20,its variation trend is low in summer and high in winter. There was a strong negative correlation between temperature,humidity,wind velocity,visibility and API,but their relationships had diversities in different season.