Aided by the early exit of winter, Delhi this year saw its second cleanest month of February in terms of air quality since the Central Pollution Control Board started measuring AQI from April 2015. The average AQI during the month was 237, the lowest after 225 in February last year.
source https://timesofindia.indiatimes.com/city/delhi/high-temperatures-help-make-february-2nd-cleanest-in-delhi-since-2016/articleshow/98344532.cms
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