Cement production, in any country, plays a major role in the growth of the nation. The air quality was assessed based on new national ambient air quality standard. PM2.5, PM10, SO2, and NO2 are the selected parameters. The average value of PM10 was found beyond the permissible limit at near power plant. The outcome of the study has been presented in the form of air quality index. AQI was found moderate for PM10and PM2.5, SO2& NO2, were observed in good range. Excess of PM10 is control in water spray system, road cleaning vehicles, choosing cleaner fuel system and consider alternative fuels such as gas instead of coal by reduced the coal. This research work presents data of the ambient air quality status of Thiruvallur district of Tamilnadu, India. Modern ESP are designed to have high collection efficiencies of all types of fly ash, some are marketed as applicable to worldwide coal firing; collection efficiencies are now up to 99%.
