This article is preliminary introducing the regional overviews of haze situation in Chongqing between January to October in 2010. The result states hazes proportion is 23. 03% over all monitoring days. Those hazes happen in the diffuse worse days in Spring and Autumn. It discusses those characteristic factors under the weather between the haze and the un-haze. It shows that particulates(especially fine particles) play a significant effect on the poor visibility,but also BC is the same role on fine particles. These pollutants are leading to the higher haze rate.%针对2010年1-10月间重庆地区区域性灰霾整体概况初步讨论,结果表明灰霾日占观测总天数的23.03％,且多集中在大气扩散条件相对较差的第一三季度.通过对灰霾与非灰霾日典型天气渐变条件下特征因子的讨论,得到颗粒物(尤其是细粒子)对大气能见度影响显著,而黑碳对细粒子贡献显著,导致灰霾发生率增大.
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