Delhi most polluted capital, India has 18 of top 30 worst AQI ranked cities

New Delhi: Despite efforts to reduce air pollution, 14 of the world’s 20 most polluted cities are in India, a new report has revealed. With an average of 98.6 Particulate Matter (PM 2.5) concentration, Delhi topped the list of most polluted capital cities in the world, while Dhaka was the second-worst after Delhi.

Pakistan was the second-most-polluted country, while Afghanistan, India and Nepal were all in the top 10.

On the other hand, many Chinese cities, including the capital Beijing, have shown improvement and have dramatically improved their air quality in recent years.