New Delhi continues to be the world’s most polluted capital city for the fourth consecutive year. Dhaka, N’Djamena, Dushanbe and Muscat in 2021 will have the worst air quality. The World Air Quality Report was prepared by Swiss organisation IQAir.
Pollution levels within the capital city of Beijing continued a five-year trend of improved air quality. More than half of China’s cities saw lower levels of air pollution last year compared to the previous year. The study also found that air quality in China continued to improve last year.
None of the cities in India met the prescribed World Health Organization (WHO) air quality standards of 5 micrograms per cubic meter, an international report has claimed. The report is based on PM2.5 air quality data from 6,475 cities in 117 countries.
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