The top 10 most polluted cities in the world as per the World Air Quality Report 2020 are:
| Top 10 Most Polluted Cities in the World 2020 | |||
| Rank | City | Country | Average Air Quality Index |
| 1 | Hotan | China | 110.2 |
| 2 | Ghaziabad | India | 106.6 |
| 3 | Bulandshahr | India | 98.4 |
| 4 | Bisrakh Jalalpur | India | 96 |
| 5 | Bhiwadi | India | 95.5 |
| 6 | Noida | India | 94.3 |
| 7 | Greater Noida | India | 89.5 |
| 8 | Kanpur | India | 89.1 |
| 9 | Lucknow | India | 86.2 |
| 10 | Delhi | India | 84.1 |
The table given below mentions the top 10 most polluted countries according to data aggregated from over 80,000 data points based on the findings of the World Air Quality Report 2020:
| Top 10 Most Polluted Countries in the World 2020 | |||
| Rank | Country/Region | AVQ AQI | Population |
| 1 | Bangladesh | 162 | 164,689,383 |
| 2 | Pakistan | 153 | 220,892,331 |
| 3 | India | 141 | 1,380,004,385 |
| 4 | Mongolia | 128 | 3,278,292 |
| 5 | Afghanistan | 128 | 38,928,341 |
| 6 | Oman | 123 | 5,106,622 |
| 7 | Qatar | 123 | 2,881,060 |
| 8 | Kyrgyzstan | 121 | 6,524,191 |
| 9 | Indonesia | 114 | 273,523,621 |
| 10 | Bosnia Herzegovina | 113 | 3,280,815 |
Further Reading:
Also, refer to The Hindu – Daily News Analysis for UPSC preparation.
| Related Links | |
| National Population Register (NPR) | Distribution of Population |
| Air Pollutants | Stubble Burning |
| What is Smog? | Delhi Air Pollution [UPSC Notes] |
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