It includes different methods used for measurement and calibration of PM10 and PM2.5 as well as different gaseous pollutants. it also includes methods used for the analysis of chemical composition. Air is one of the most important constituents of nature, necessary for the survival of all forms of life on the earth. Clean air is very essential for good human health and well-being of humanity. Due to the presence of undesirable materials in the atmosphere, the ambient air quality has been progressively deteriorated and thus air pollution has become a major environmental problem for both developed and developing countries. Urban air pollution and its impact on air quality is a worldwide problem that manifests itself differently in different regions depending on the political, economic and technological developments on climate and topography as well as on the nature of the available energy sources.Atmospheric aerosols also called atmospheric particulate matter or aerosol air pollution is caused due to very small solid particles or liquid droplets that are suspended in the air.