File photo of pollution in Delhi
NEW DELHI: Delhi’s air quality improved by approximately 15% between 2019 and 2020 but it still ranked as the 10th most polluted city in the world and the most polluted capital, according to the World Air Quality Report, 2020, released by the Swiss air technology company, IQAir.
In 2020, all Indian cities that were monitored observed air quality improvements compared to 2018 while 63% saw improvements over 2019. However, India continues to feature prominently at the top of the most polluted cities ranking, with 22 of the top 30 most polluted cities globally.
Delhi, with an average annual PM2.5 concentration of 84.1 micrograms per cubic metre, topped the list of the most polluted capital cities. It was followed by Dhaka ( Bangladesh) with annual average PM2.5 concentration at 77.1.