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2017-2023
World's most polluted cities
Most polluted city ranking based on annual average PM2.5 concentration (μg/m³)
2023
World Air Quality Report
PM2.5 legend
0-5
Meets WHO guideline
5.1-10
Exceeds by 1 to 2 times
10.1-15
Exceeds by 2 to 3 times
15.1-25
Exceeds by 3 to 5 times
25.1-35
Exceeds by 5 to 7 times
35.1-50
Exceeds by 7 to 10 times
>50.1
Exceeds by over 10 times
Rank | City | 2023 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1601 |  Keratsini, Greece | 15.9 | 21.2 | 24.8 | 15.3 | 13.2 | 16.2 | 16.6 | 20.6 | 16.8 | 15.5 | 10.8 | 6.4 | 11.1 | 18 | 17.8 | 16.7 | -- | -- | -- |
| 1602 | Pyli, Greece | 15.9 | 22.4 | 24.8 | 13.7 | 11.7 | 14.8 | 15.8 | 17.1 | 15.4 | 14.9 | 15.9 | 2.4 | 2.9 | -- | -- | -- | -- | -- | -- |
| 1603 |  Sde Yoav, Israel | 15.9 | 15.8 | 13.5 | 13.8 | 14.3 | 18.7 | 15.1 | 14.1 | 14.4 | 19.1 | 16.2 | 17.3 | 19.1 | 15.7 | 18.3 | 16 | 19.4 | 16.6 | 17.7 |
| 1604 |  Lagow, Poland | 15.9 | 22.2 | 25.1 | 20 | 16.1 | 12.1 | 11.4 | 8.9 | 11.1 | 13.1 | 13.2 | 16.9 | 21.8 | -- | -- | -- | -- | -- | -- |
| 1605 |  Ljubljana, Slovenia | 15.9 | 18.5 | 34.1 | 16.5 | 9.5 | 9.5 | 10.8 | 8.7 | 12.1 | 12.2 | 12.6 | 18.4 | 28.9 | 16.2 | 18.8 | -- | -- | -- | -- |
| 1606 | Zagorje ob Savi, Slovenia | 15.9 | 22.2 | 38.1 | 18.3 | 9.5 | 9.5 | 10.2 | 7.8 | 10 | 10 | 11.2 | 18.3 | 27.8 | -- | -- | -- | -- | -- | -- |
| 1607 |  Seocheon, South Korea | 15.9 | 18.9 | 28.2 | 21.8 | 19.8 | 13.4 | 9.8 | 9.5 | 12.6 | 12.4 | 12.8 | 12 | 21.1 | 15.6 | 17.5 | 19.2 | 24.3 | -- | -- |
| 1608 |  Mahiyanganaya, Sri Lanka | 15.9 | -- | -- | 25.8 | 23.5 | 20 | 16.7 | 15.4 | 17.6 | 11 | 15.1 | 8.8 | 12.8 | -- | -- | -- | -- | -- | -- |
| 1609 |  Bolu, Turkey | 15.9 | 36.5 | 20.1 | 12.6 | 8.2 | 7.1 | 8.1 | 14.6 | 17 | 11.3 | 14.7 | 10.3 | 29.5 | 16.2 | 15.2 | 22.5 | 24.8 | -- | -- |
| 1610 |  St. Albert, Canada | 15.8 | 20.4 | 6.2 | 10.8 | 6.7 | 31.9 | 19.3 | 25.3 | 18.8 | 28.7 | 6.1 | 8 | 6.1 | 8.5 | 9.8 | 6.7 | 6.7 | -- | -- |
| 1611 | Golden, Canada | 15.8 | 19.9 | 17.5 | 15.2 | 5.9 | 12 | 8.5 | 19.2 | 34.8 | 10.5 | 9.9 | 19.1 | 16.3 | 13.8 | 22.2 | 11.5 | -- | -- | -- |
| 1612 |  Ningde, China | 15.8 | 22.1 | 22 | 21.9 | 19.6 | 15.6 | 12.4 | 8.8 | 10.1 | 9.6 | 12.3 | 15.8 | 19.9 | 15.3 | 19.6 | 21.5 | 23.6 | 24.4 | 26.3 |
| 1613 | Shima, China | 15.8 | 21 | 26.2 | 27.4 | 20.6 | 16 | 8.9 | 3.4 | 5.1 | 7.9 | 13.6 | 19.1 | 21.3 | 15.8 | 16.2 | -- | -- | -- | -- |
| 1614 |  Sajószentpéter, Hungary | 15.8 | 25.9 | 25.2 | 15.4 | 14.9 | 10.4 | 9.6 | 9 | 10.6 | 12.2 | 16.4 | 20.7 | 36.7 | 18 | 25.7 | 21.7 | -- | -- | -- |
| 1615 | West Jerusalem, Israel | 15.8 | 17.2 | 12.8 | 12.9 | 12.5 | 17.9 | 15.5 | 15.7 | 22.6 | 16.1 | 14.2 | 15.5 | 16.1 | 17.8 | 17.7 | -- | -- | -- | -- |
| 1616 | Mavki'im, Israel | 15.8 | 14.6 | 12.4 | 13.7 | 13.1 | 20.8 | 14.5 | 13.9 | 14.2 | 17.2 | 16.6 | 18.2 | 19.5 | 16 | 16.8 | -- | -- | -- | -- |
| 1617 |  Magenta, Italy | 15.8 | -- | -- | -- | 10.9 | 10.9 | 13 | 12.9 | 11 | 16.1 | 24.1 | 16.5 | 24.7 | -- | -- | -- | -- | -- | -- |
| 1618 |  Sungai Petani, Malaysia | 15.8 | 13 | 13.6 | 19.1 | 24.8 | 14 | 17.7 | 16.7 | 13.8 | 21.3 | 17 | 9.3 | 9.1 | 15.7 | 18.2 | 15.1 | 14.8 | -- | -- |
| 1619 |  Irapuato, Mexico | 15.8 | 25.7 | 21.5 | 20.2 | 18.9 | 20 | 15 | 10.6 | 8.5 | 8.3 | 8.4 | 13.8 | 17.1 | 18.1 | 17.9 | 18.2 | 19.2 | 19.7 | 23.2 |
| 1620 | Kłodzko, Poland | 15.8 | 20.7 | 27.3 | 22 | 18.7 | 12.3 | 10 | 7.3 | 7.6 | 10.5 | 14.6 | 12.9 | 25.4 | -- | -- | -- | -- | -- | -- |
| 1621 | Mielec, Poland | 15.8 | 15.8 | 19.1 | 19.1 | 14.2 | 12.8 | 16.1 | 12.6 | 11.4 | 15 | 11.9 | 16.6 | 24.8 | 16.4 | 23.9 | 18.8 | 21.1 | 25.1 | 25.3 |
| 1622 |  Bucharest, Romania | 15.8 | 23 | 25.6 | 22.2 | 17.8 | 11 | 10 | 11.8 | 11.9 | 9.6 | 12.4 | 12.2 | 23 | 17.1 | 14.9 | 15.5 | 18.4 | 20.3 | -- |
| 1623 | Silivri, Turkey | 15.8 | 17.9 | 17.9 | 18.6 | 15.4 | 15 | 13.1 | 15.3 | 14.4 | 13.2 | 18.1 | 14 | 16.9 | 13.1 | -- | -- | -- | -- | -- |
| 1624 |  Sofiivska Borschahivka, Ukraine | 15.8 | 27.8 | 19.7 | 20.4 | 13.3 | 9 | 11.1 | 7.3 | 12.4 | 16.6 | 17 | 14.1 | 21.5 | -- | -- | -- | -- | -- | -- |
| 1625 |  Attleboro, USA | 15.8 | 4.1 | 84.2 | -- | -- | 1.5 | -- | 15.6 | 10.5 | 11.4 | 6.4 | 8.4 | 8.8 | 5.3 | 8.1 | -- | -- | -- | -- |
| 1626 | Sherwood Park, Canada | 15.7 | 18.3 | 5.7 | 10.6 | 7.3 | 30.3 | 19.4 | 29.3 | 19.7 | 30 | 5 | 6.9 | 4.7 | 7.1 | 8.5 | 6.3 | 8 | -- | -- |
| 1627 | Wainwright, Canada | 15.7 | 18.3 | 7.6 | 10.7 | 6 | 28 | 20.5 | 38.7 | 24.6 | 22 | 6 | 8.5 | 7.8 | 8.1 | 12.2 | -- | -- | -- | -- |
| 1628 | Valemount, Canada | 15.7 | 11.6 | 9.7 | 18 | 8.1 | 17.3 | 13.3 | 28.8 | 24.6 | 24 | 10.8 | 12.8 | 8.5 | 10 | 11 | 8.5 | -- | -- | -- |
| 1629 | Dalmeny, Canada | 15.7 | 19.7 | 8.3 | 11.3 | 6.7 | 17.1 | 14.5 | 21.7 | 23 | 40.1 | 5.6 | 9.7 | 9.2 | 10 | -- | -- | -- | -- | -- |
| 1630 | Haikou, China | 15.7 | 23.8 | 17.3 | 18.7 | 18.6 | 14.1 | 10.3 | 8.3 | 11.2 | 9.3 | 16 | 18.3 | 22.4 | 13.1 | 14.3 | 14.1 | 16.3 | 17.1 | 19.5 |
| 1631 |  San Cristobal, Colombia | 15.7 | -- | 29.7 | 21.7 | 16.1 | 15.8 | 12.8 | 12.5 | 14.5 | 15.9 | 18.2 | 14.1 | 18.8 | -- | -- | -- | -- | -- | -- |
| 1632 | Miskolc, Hungary | 15.7 | 18.2 | 13.6 | 15.2 | 14.7 | 12.4 | 12.5 | 12.2 | 13.4 | 12.2 | 14.4 | 18.2 | 29.3 | 17.6 | 23.4 | 21 | 21.9 | 24.4 | -- |
| 1633 | Jerusalem, Israel | 15.7 | 16 | 13 | 13.9 | 12.9 | 17.6 | 15.9 | 15.6 | 16.2 | 18 | 16.1 | 16.7 | 15.9 | 16.9 | 17.9 | 17.2 | 20.9 | 18.9 | 17.1 |
| 1634 |  Kokshetau, Kazakhstan | 15.7 | 5.7 | 21 | 18.2 | 17.4 | 20.6 | 19 | 17.4 | 13.5 | 4.4 | 9.9 | 17.8 | 23.9 | 15.9 | 13.1 | -- | -- | -- | -- |
| 1635 | Ciudad de Mexico, Mexico | 15.7 | 22.7 | 19.6 | 19.8 | 20.2 | 21.2 | 16.2 | 12 | 11 | 12.4 | 6.8 | 8.7 | 17.9 | -- | -- | -- | -- | -- | -- |
| 1636 |  Chisinau, Moldova | 15.7 | 22.5 | 24.4 | 25.8 | 13.9 | 12 | 11.1 | 10 | 11.2 | 11.6 | 12.9 | 14.2 | 20 | 22.6 | 34.7 | -- | -- | -- | -- |
| 1637 |  Hodonín, Czech Republic | 15.6 | 12.3 | 17.6 | 14.4 | 13.1 | -- | -- | -- | 22.2 | 21 | 10.9 | 10.2 | 20 | 11.8 | 9.9 | -- | 14.8 | 16.6 | 17.8 |
| 1638 | Egaleo, Greece | 15.6 | 24.8 | 29.1 | 15.8 | 11.2 | 11.6 | 12.8 | 16.9 | -- | -- | 8.4 | 6.7 | 16.3 | -- | -- | -- | -- | -- | -- |
| 1639 | Ein Tamar, Israel | 15.6 | 15 | 14.3 | 13.5 | 11.9 | 18.7 | 13.6 | 15.8 | 16.2 | 18.2 | 17.1 | 16.8 | 15 | 16.4 | 19 | 14.1 | 15.2 | 28.4 | 26.7 |
| 1640 | Terlizzi, Italy | 15.6 | 18.8 | 26 | 15.8 | 12.7 | 14.3 | 12.8 | 13.9 | 17.6 | 16.9 | 12.8 | 7.2 | 18.7 | 16.6 | 16.1 | 19.6 | 19.9 | -- | -- |
| 1641 | Benevento, Italy | 15.6 | 28.5 | 27.1 | 17.6 | 12.2 | 12.4 | 13.8 | 17 | 10.1 | 12.1 | 12.3 | 12.9 | 32.2 | 16.6 | 14.4 | 20 | 16.2 | 14.2 | 19.4 |
| 1642 | Pignataro Maggiore, Italy | 15.6 | 23.1 | 29.4 | 17 | 11.6 | 11.8 | 14.7 | 13 | 14.6 | 16.8 | 13.3 | 5.7 | 17.8 | 17.5 | 14.4 | -- | -- | -- | -- |
| 1643 | Tijuana, Mexico | 15.6 | 14.9 | 16.3 | 13.6 | 18.9 | 12.3 | 10.4 | 18 | 14.4 | 15.2 | 14.3 | 15.8 | 22.7 | 18 | 14.5 | 26.1 | -- | -- | -- |
| 1644 | Otopeni, Romania | 15.6 | 18.9 | 27.7 | 21.7 | 14.5 | 10.6 | 10.8 | 12 | 11.5 | 10.7 | 12.1 | 12.1 | 24.8 | 19 | 25.8 | -- | -- | -- | -- |
| 1645 |  Hartbeespoort, South Africa | 15.6 | 9.7 | 8.7 | 9.9 | 18.6 | 15.2 | 26.2 | 25.9 | 27 | 20.5 | 13.9 | 6.5 | 5.4 | 16.3 | 17 | 20.8 | 60 | -- | -- |
| 1646 | Yeongdong, South Korea | 15.6 | 20.3 | 20.4 | 27.2 | 23 | 14 | 10.8 | 9.3 | 9.6 | 9.9 | 11.5 | 13.5 | 17 | 18.1 | 18 | -- | 29.5 | -- | -- |
| 1647 | Dongducheon, South Korea | 15.6 | 22.6 | 25.5 | 24.1 | 14.2 | 13.3 | 12.4 | 13 | 9.9 | 8.2 | 12 | 13.2 | 16.8 | 15.9 | 15.6 | -- | 27.6 | 25.6 | 32.5 |
| 1648 |  Trat, Thailand | 15.6 | 19.9 | 31.2 | 31.7 | 23.5 | -- | 8.2 | 8.3 | 8.8 | 5.9 | 9.3 | 15.4 | 13 | 10.8 | 11.4 | -- | -- | -- | -- |
| 1649 | Kayseri, Turkey | 15.6 | 34.9 | 17.7 | 7.4 | 2.8 | 3.2 | 2.1 | 4.8 | 6.9 | 10 | 20 | 26 | 46.8 | 17.9 | 28.8 | 24.6 | 29.8 | -- | -- |
| 1650 | Kilis, Turkey | 15.6 | 28.6 | 19.4 | 11 | 5.5 | 7.1 | 7.2 | 8.9 | 15.8 | 15.5 | 17.2 | 23 | 30.2 | 12.7 | 22.1 | -- | -- | -- | -- |
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