The 'World Air Quality Report 2020' report has been released by Switzerland's air-quality technology company IQ Air. This report is based on PM 2.5 pollution data of 106 countries of the world.
According to the report, India is on top with 22 cities out of the 30 most polluted cities in the world. Delhi is the 10th most polluted city in the world and the most polluted capital. It is important to note that Delhi's air quality has improved in the year 2020 as compared to the year 2019.
Ghaziabad (PM concentration 106.6 µg / m³) is the second most polluted city in the world after China's Hotan city (PM concentration 110.2 µg / m³). Apart from this, other Indian cities in the list of top 10 polluted cities of the world are Bulandshahar, Bisrakh Jalalpur, Bhiwadi, Noida, Greater Noida, Kanpur, Lucknow and Delhi respectively.
According to the report, PM concentrations in India have decreased relative to the year 2019, despite this, India was ranked third in the list of most polluted countries, while India was ranked fifth in the year 2019. Bangladesh topped the 2020 report, while Pakistan was the second most polluted country. China is 14th on this list, while USA ranked 84th.
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