World's most polluted cities 2020 (PM2.5)
The most polluted cities according to data aggregated from over 80,000 data points.
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2020
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World air quality report
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2020 Report - English
2020 World air quality report
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PM2.5 Legend 
WHO target
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
Unit: µg/m³
| Rank | City | 2020 AVG | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | 2019 AVG | 2018 AVG | 2017 AVG |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Kamensk-Shakhtinskiy, Russia | 16 | 23.6 | 17.7 | 21.5 | 15.6 | 8.6 | 10.1 | 13.2 | 13.3 | 15.6 | 20.4 | 17.9 | 16.8 | - | - | - |
| 2 | Krasnoyarsk, Russia | 14.7 | 16.9 | 26.3 | 6.1 | 12.8 | 7.2 | 7 | 9.9 | 16.9 | 8.6 | 7.6 | 31.8 | 25.9 | 17.7 | 23.1 | 16.4 |
| 3 | Magnitogorsk, Russia | 13.7 | - | - | - | 5.6 | 7.5 | 6.2 | 14.7 | 10.8 | 9.7 | 11.2 | 21.3 | 29.6 | - | - | - |
| 4 | Moscow, Russia | 10.5 | 7 | 7.7 | 12.2 | 7.5 | 8 | 11 | 10.2 | 11.2 | 11.9 | 16 | 9.2 | 14.4 | 10 | 10.1 | 8.4 |
| 5 | Tol'yatti, Russia | 9.5 | 7.1 | 7.4 | 8.1 | 7.1 | 6.7 | 9.3 | 9.3 | 8.8 | 7.2 | 9.8 | 10.6 | 22.8 | 10.4 | - | - |
| 6 | Gelendzhik, Russia | 8.1 | 8.5 | 6.8 | 12.4 | 7.4 | 6.2 | 3.6 | 7.2 | 6.3 | 9.2 | 9.4 | 7 | 8.4 | 11 | - | - |
| 7 | Saransk, Russia | 6.5 | 13.2 | 8.6 | 7.9 | 6.6 | 4.1 | 5 | 5.8 | 5.6 | 5.4 | 7.4 | 5.2 | 3.4 | 9.4 | 9.6 | - |
| 8 | Saint Petersburg, Russia | 6.4 | 6.9 | 6.1 | 7.8 | 4.6 | 3.7 | 6.3 | 4.3 | 5.6 | 5.9 | 8.6 | 6.5 | 10.6 | 7.6 | - | - |
| 9 | Vladivostok, Russia | 3.6 | 6.1 | 7.5 | 3.9 | 2.5 | 1.9 | 1.5 | 1.4 | 2.1 | 2.3 | 2.1 | 3.5 | 4.9 | 12.6 | 13.5 | 16.2 |
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