Delhi has earned the dubious tag of being India’s most polluted city, rising from rank 3 in 2019 and rank 2 last year in the worst-polluted list, as per the National Clean Air Programme (NCAP) Tracker based on annual PM2.5 levels measured by the Central Pollution Control Board.from India News | Latest News Headlines & Live Updates from India - Times of India https://ift.tt/5Gm3Huw
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