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In the midst of the Coronavirus pandemic, a cross country lockdown is forced in India at first for three weeks from 24th Walk to fourteenth April 2020 and reached out up to third May 2020. Because of the constrained limitations, contamination level in urban areas the nation over radically hindered just inside a couple of days which polarize conversations with respect to lockdown to be the strong elective measures to be actualized for controlling air contamination. The current article, in the long run, chipped away at this heading to view the air quality situation in the midst of the lockdown time frame logically with uncommon reference to the megacity Delhi. With the guide of air quality information of seven toxin boundaries (PM10, PM2.5, SO2, NO2, CO, O3 and NH3) for 34 checking stations spread over the megacity, we have utilized Public Air Quality File (NAQI) to show the spatial example of air quality in pre and during-lockdown stages. The outcomes showed that during lockdown air quality is fundamentally improved. Among the chose toxins, centralizations of PM10 and PM2.5 have seen the greatest decrease (>50%) in contrast with the pre-lockdown stage. In contrast with the most recent year (for example 2019) during the said time span, the decrease of PM10 and PM2.5 is as high as about 60% and 39% separately. Among different toxins, NO2 (−52.68%) and CO (−30.35%) level have likewise decreased during-lockdown stage. About 40% to half improvement in air quality is distinguished soon after four days of starting lockdown. About 54%, 49%, 43%, 37% and 31% decrease in NAQI have been seen in Focal, Eastern, Southern, Western and Northern pieces of the megacity. Generally, the investigation is believed to be a valuable enhancement to the administrative bodies since it indicated the contamination source control could constrict the air quality. Brief such source control in an appropriate time span may recuperate the climate.
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