Question

why do you think there is an improvement in the AQI level in 2020​

Answer 1

NEW DELHI: While the country is caught in a lockdown and faces a grim battle with coronavirus, the Central Pollution Control Board has assessed that the ‘Janta Curfew’ on March 22 and the lockdown since March 24 has led to a near dramatic improvement in the air quality across large parts of India especially Delhi-NCR and the Indo-gangetic plain. Industrial cities, however, saw no respite.

Answer 2

Answer:

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• As on March 29, 2020, a total of 91 cities were under ‘Good’ & ‘Satisfactory’ category, with 31 cities with ‘Good’ AQI values. As on March 29, 2020 no city is under ‘Poor’ AQI category.
• Substantial improvement in air quality of Delhi NCR is noted during the lockdown period- PM10 and PM2.5 levels were reduced by about 35 to 40% in Delhi as the major contributing sources to PM & NOx emissions (prominent pollutants in Delhi NCR) have been restricted.
• The improvement in air quality of 85 cities was noted as most of the vehicles remained off road and non-essential industrial units closed during Janta Curfew and national wide lockdown.

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