中文摘要：

利用安庆市2015年PM2．5资料研究了安庆地区细颗粒物时空变化特征，结合同时期气象资料分析了PM2．5浓度与气象条件的关系，探讨了PM2．5对大气能见度的影响。结果表明：安庆市细颗粒物污染年均值约为0．053mg·m^-3。安庆市PN2．5质量浓度呈现出冬季最高、春秋次之、夏季最低的污染特征；PM2．5质量浓度与降水、风等环境气象要素关系密切，对大气能见度有重要影响，两者之间存在显著负相关关系。

英文摘要：

The characteristics of PM2.5 pollution in Anqing City are analyzed basing on the monitoring data of daily average PM2.5 concentration in 2015. Combining with the corresponding surface meteorological data, correlation analyses are also conducted to identify meteorological factors that have significant impact on PM2.5. The results show that the annual mean PM2.5 concentration is 0.053mg·m^-3. PM2.5 in winter is the most serious season in a year, and in summer, the most light. Wind and precipitation are the main meteorological factors affecting PM2.5 concentration in Anqing. The correlation analysis shows a negative correlation between atmosvheric visibility and fine concentration.