CURRENT AFFAIRS

Detailed explanation-1: -New Delhi: The 2021 World Air Quality Report for the fourth consecutive year finds New Delhi as the most polluted capital city (and fourth most polluted city) in the World followed by Dhaka in Bangladesh, N’Djamena in Chad, Dushanbe in Tajikistan and Muscat in Oman.

Detailed explanation-2: -New Delhi once again kept its place as the most polluted capital city in the world in 2021, with an average PM2. 5 concentration of 85 micrograms per cubic meter of air (g/m³). PM2.

Detailed explanation-3: -Ghaziabad (217.57 micrograms per cubic metre) was the most polluted non-attainment city in the country in terms of PM10 levels, while Faridabad (215.39 micrograms per cubic metre) ranked second and Delhi (213.23 micrograms per cubic metre) stood third. In 2021, Ghaziabad was the most polluted with respect to PM2.

Detailed explanation-4: -The most polluted city in the world is a notable climber in Saudi Arabia, with Dammam averaging 124.11 micrograms of PM2. 5 as it was ranked 11th last year. The number of Indian cities on the top 25 list decreased from 10 to 9 as one Chinese city joined the list.