Road transport is one of the significant sources of air pollution, affecting local air quality in cities. The study explains the diurnal variations of different type of pollutants at two sites (city centre and Tinsley industrial site) of Sheffield city. And also the study identifies the degree of incidence of surface based inversions on the concentrations of pollutants. Photochemical origins of pollutants were seasonally analysed. Further, the study brings out the possible implications from vehicular air pollutants on local environment and human health effects. It was revealed that an urban air pollutant has exceeded the limit of proposed Ambient UK Air Quality Standard. The study recommends to the local authorities to use economic pricing and taxation, local transport plan targets & solutions approach and land use & transport integration management tools to reduce transport pollution of Sheffield city.