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Air quality services - Support
World most polluted cities 2019 (PM2.5)
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2019
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World air quality report
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2019 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 | 2019 AVG | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | 2018 AVG | 2017 AVG |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Krasnoyarsk, Russia | 17.7 | 20.7 | 23.5 | 15.9 | 10.9 | 9.3 | 9.9 | 48.1 | 19.4 | 9.7 | 8.9 | 13 | 22.4 | 23.1 | 16.4 |
| 2 | Zyryanka, Russia | 13.3 | 18 | 13.9 | 8.6 | 4.3 | 3.7 | 16.4 | 38 | 5.1 | 5.8 | 6.2 | 7.5 | 19.6 | - | - |
| 3 | Vladivostok, Russia | 12.6 | 14.9 | 27.7 | 18.1 | 9.7 | 13.4 | 11.3 | 20.5 | 6.4 | 4.3 | 7.4 | 5.3 | 7.3 | 13.5 | 16.2 |
| 4 | Gelendzhik, Russia | 11 | - | - | 9.6 | 9.7 | 14.1 | 15.3 | 10.3 | 11.3 | 7.9 | 7.3 | 15.6 | 9.5 | - | - |
| 5 | Tol'yatti, Russia | 10.4 | - | 9.3 | 12.6 | 15 | 13.9 | 9.5 | 11.9 | 9.6 | 10 | 7.4 | 7.4 | 7 | - | - |
| 6 | Strogino, Russia | 10.1 | - | 7.1 | 11.3 | 16.5 | 9.6 | 9.1 | 5.9 | 6.7 | 9.5 | 7.7 | 13.5 | 11.4 | - | - |
| 7 | Moscow, Russia | 10 | 11.1 | 8.1 | 7.6 | 13.7 | 10.3 | 9.1 | 7.4 | 8.6 | 12.1 | 9.8 | 12.5 | 9.4 | 10.1 | 8.4 |
| 8 | Saransk, Russia | 9.4 | 11.2 | 10.8 | 11.1 | 13.1 | 6.7 | 5.8 | 7 | 6.7 | 9.6 | 8.5 | 10.9 | 11.2 | 9.6 | - |
| 9 | Saint Petersburg, Russia | 7.6 | - | - | 8 | 10.8 | 7.2 | 6.3 | 5.9 | 6.3 | 6 | 6.6 | 11.4 | 8.1 | - | - |
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