<p><span style="font-family:Arial,Helvetica,sans-serif">This study present extensive review on the atmospheric non methane hydrocarbons for the monitoring technology, source profile, and variability studies which have been done by various researchers at different research and development institutions all over the India. Most of the studies have reported that the concentration level in the urban environment is elevated at alarming level due to vehicular emission, refinery operation, secondary industrial process, LPG leakage and biomass burning. The elevated ambient concentration of NMHCs in an urban environment has a significant impact on climate change and &nbsp;human health. NMHCs levels are to be removed and limit the emission by using newer technology under specific industrial and practical conditions in the present time. This review aims at a summarizing discussion on the entire areas which come underneath the umbrella of NMHCs technologies and helpful to the future researchers and those findings will be helped to the formulate policies and implement for the enhancement of air quality in India.</span></p>