Air Pollution Tolerance Index (APTI) is one of the green technology-based tools used for analysing air pollution of a particular area which leads to develop an idea about the air quality. Air pollution tolerance index (APTI) is an intrinsic quality of trees to control pollution problems, which is currently of major concern of urban localities. The trees having higher tolerance index rate are tolerant towards air pollution and can be used as a source to control air pollution, whereas the trees having less tolerance index can be used as an indicator to know the rate of air pollution. The present work is based on the assessment of APTI using physicochemical parameters such as pH of leaf extractives, Relative Water Content (RWC), Total chlorophyll and ascorbic acid content of different plants for mitigating air pollution. The objective of the study is to determine the inherent quality of plants to tolerate air pollution and identify the plant species for the pollution mitigation. In the present study, 10 different plant species were taken from the highly polluted road side area as Experimental site (Polluted area) and the same species present in the residential colony which may be considered as control site (Non polluted area). The results indicate that, all the biochemical parameters show the deterioration with the increase of intensity of pollution. Tolerant plants species serve as suitable sinks to survive the air pollution and the sensitive plant species may be used as a bio-indicator of air quality.