10和PM_2.5气溶胶是影响我们健康的悬浮颗粒物总量的组成部分。由于违反了国家环境空气质量标准(NAAQS)的限制，经常有报道称空气质量非常差。PM₁₀和PM_2.5对住宅和敏感区域均已超标。这是城市地区呼吸道疾病病例增加的主要原因之一。然而，气溶胶载荷本身并不是决定或预测气溶胶毒性和有害影响的因素。化学成分和尺寸范围确实很重要。气溶胶载荷主要有三种来源:海洋、地壳和人为。由于气溶胶的海洋和地壳含量一般是无毒的，因此，空气的毒性程度需要根据含有金属、多环芳烃和其他有害成分的人为成分来确定。 Apart from air quality and health, atmospheric aerosols play vital role in other atmospheric processes such as cloud formation, radiative transfer and monsoon etc. Though there are several studies reported on different aspects of atmospheric aerosols, but most of the findings are sort of data reporting based on short term observations. Hence, there is need to investigate the atmospheric aerosols in order to demonstrate local and regional phenomenon on the basis of long term datasets.