World's most polluted cities (historical data 2017-2021)

Most polluted city ranking based on annual average PM2.5 concentration (μg/m³)

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2021

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World air quality report

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2021 World air quality report

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Meets WHO guideline
Exceeds by 1 to 2 times
Exceeds by 2 to 3 times
Exceeds by 3 to 5 times
Exceeds by 5 to 7 times
Exceeds by 7 to 10 times
Exceeds by over 10 times
RankAscending icon
City 2021 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2020 2019 2018 2017
1 Russia
Krasnoyarsk, Russia
49.8 52.4 68.9 18.2 21.1 36.7 32.7 42.8 148.4 45.3 48.3 29.4 53.2 14.7 17.7 23.1 16.4
2 Russia
Kamensk-Shakhtinskiy, Russia
15.8 23.8 18.6 16.6 16.4 9.2 10.5 13.3 17.9 12.3 17.4 18.9 14.6 16 - - -
3 Russia
Priargunsk, Russia
13.5 31.5 25.2 12.5 9.8 8.9 8.1 7.5 7.3 10 11.4 14.3 18.8 - - - -
4 Russia
Tol'yatti, Russia
13 12.8 8 8 10.5 14.4 11 9.2 25 30 10.4 8.5 8.6 9.5 10.4 - -
5 Russia
Moscow, Russia
11.9 15.8 11.5 10.3 12.2 10.7 13 12.2 14.6 8.7 13.3 9.3 10.8 10.5 10 10.1 8.4
6 Russia
Sterlitamak, Russia
10.5 - 10.1 10.4 8.9 13.4 12.1 9.7 13.5 6.8 12.4 7.9 10.2 - - - -
7 Russia
Magnitogorsk, Russia
10.2 20.6 13.7 10.9 8.3 9.8 8.4 8.5 14.8 5.6 7.6 5.3 8.4 13.7 - - -
8 Russia
Gelendzhik, Russia
8.4 7.7 6.7 7.1 9.7 6.8 7.9 10.5 13.1 5.5 8.9 13 6.5 8.1 11 - -
9 Russia
Saint Petersburg, Russia
7.6 12.8 9.1 6.4 4.7 4.9 6.3 6.2 6 7.8 9.8 6.7 10.1 6.4 7.6 - -
10 Russia
Vladivostok, Russia
3.4 6.3 6 3.5 4.3 1.8 1.5 1.7 2.2 1.6 2 3.9 5.2 3.6 12.6 13.5 16.2
11 Russia
Saransk, Russia
3.1 3.5 2.3 1.5 1.6 1.5 1.8 3 6.1 4 5 2.5 3 6.5 9.4 9.6 -

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