Abstract:  Air Pollution occurs due to the presence of undesirable solid or gaseous particles in the air in quantities that are harmful to human health and environment. Ambient air quality is known to be influenced by emission from the source, Meteorological condition and topography of the area. The concentration of particulate matter was found above the permissible limit in most of the sites while the concentration of gaseous pollutants was found within the permissible limit as per the standards given by Central Pollution Control Board (CPCB, 2009). Air pollution has been a steadily growing problem since the industrial revolution which started by the invention of technology that could use new source of energy. The sources were coal, oil and gases. This study was undertaken  to asses the quality status ambient air pollutants SPM, RSPM, SO2 and NOx. The analysed values of SPM, RSPM, SO₂ and NOx at the sampling sites clearly illustrates that the ambient air of Rewa city is primarily deteriorated by particulate matters (SPM, RSPM) and least by gaseous pollutants (SO₂ and NOx). Concentrations of all the pollutants were found to be highest during winter season followed by summer and least during post monsoon season respectively.

Keywords- Ambient air quality, RSPM, SPM, SO2 and Nox.