Air pollution level was increase with rainfall variation. Contamination of air pollutant was travel to another area due to wind and Sea breeze. Main air pollutant emitter was Traffic and vehicles. It was clearly shows with monthly variation of pollutant distribution. Air pollution was increased with festival seasons and school holding time period. Anyhow Road network cannot enlarge in the city area of Colombo. Land cover/ Land use were change in past four decade. The general trend were observed in... Mehr