2020 World Air Quality Report: India accounts for 46 of the world’s 100 most polluted cities. Know key highlights, challenges, and progress of India’s air quality.
source https://www.jagranjosh.com/current-affairs/9-out-of-top-10-most-polluted-cities-in-india-2020-world-air-quality-report-know-key-highlights-1637669571-1