2023 World Air Quality Report: Delhi remains world's most polluted capital, PM2.5 levels increase.
Delhi, India's capital, has retained its title as the world's most polluted capital city for the fourth consecutive year, according to the World Air Quality Report 2023 published by Swiss organisation IQAir. India ranks as the third worst country in terms of air quality, with Begusarai in Bihar topping the charts as the world's most polluted metropolitan area. In 2023, Delhi experienced a worsening of air quality as PM2.5 levels increased from 89.1 micrograms per cubic metre in 2022 to 92.7 micrograms per cubic metre.
March 19, 2024
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