2017-2025
World's most polluted cities
The most polluted cities according to data aggregated from over 80,000 data points.
2025
World Air Quality Report
2025
World Air Quality Report
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1507 |  Hong Kong Hong Kong SAR | 15.7 | 16.4 | 15.5 | 14.4 | 15.9 | 15.4 | 20.3 | 20.2 | 21.8 |
| 1508 |  Esine Italy | 15.7 | 14.6 | 16.3 | 21.2 | 22.2 | 23.1 | 21.8 | -- | -- |
| 1509 | Piatto Italy | 15.7 | 14.8 | 18.5 | 22.3 | 20.5 | -- | -- | -- | -- |
| 1510 | Conegliano Italy | 15.7 | 15.3 | -- | -- | -- | -- | -- | -- | -- |
| 1511 |  Kuala Lumpur Malaysia | 15.7 | 17.7 | 22.9 | 17.6 | 18.6 | 16.5 | 21.6 | -- | -- |
| 1512 |  Celaya Mexico | 15.7 | 21.6 | 24.2 | 19.2 | 19.3 | 18.6 | 20 | 20.1 | 22.2 |
| 1513 |  Doetinchem Netherlands | 15.7 | 19.3 | -- | -- | -- | -- | -- | -- | -- |
| 1514 |  Nakło nad Notecią Poland | 15.7 | 15.9 | 14.9 | -- | -- | -- | -- | -- | -- |
| 1515 |  Cluj-Napoca Romania | 15.7 | 17 | 18.7 | 26.4 | 20.1 | 13.1 | 15.7 | 21.4 | -- |
| 1516 |  Taean South Korea | 15.7 | 17.9 | 18.9 | 18.4 | 20.4 | 17.1 | 21.6 | -- | -- |
| 1517 |  Pong Thailand | 15.7 | 18.7 | -- | -- | -- | -- | -- | -- | -- |
| 1518 | Hua Hin Thailand | 15.7 | 18.4 | 22.6 | 17.3 | 17.2 | 19.1 | 21 | -- | -- |
| 1519 |  Golcuk Turkey | 15.7 | 15.4 | 17.8 | 20 | -- | -- | -- | -- | -- |
| 1520 |  Hall Lake Canada | 15.6 | 10.2 | 13.1 | -- | -- | -- | -- | -- | -- |
| 1521 |  Talcahuano Chile | 15.6 | 18.5 | 17.2 | 19.6 | 20.1 | 19 | 21.4 | 15.7 | 21.3 |
| 1522 |  Karviná Czech Republic | 15.6 | 16.9 | 17.4 | 19.2 | 33 | 18.3 | 22.1 | 27.1 | 24.6 |
| 1523 | Rožnov pod Radhoštěm Czech Republic | 15.6 | 15.4 | 13.4 | 16.8 | -- | -- | -- | -- | -- |
| 1524 |  Debrecen Hungary | 15.6 | 16.1 | 11.4 | 14.6 | 17.3 | 16.1 | -- | -- | -- |
| 1525 |  Ban Thateng Laos | 15.6 | 20 | -- | -- | -- | -- | -- | -- | -- |
| 1526 |  Bethlehem Palestine | 15.6 | 15.2 | -- | -- | -- | -- | -- | -- | -- |
| 1527 | Jelenia Góra Poland | 15.6 | 14.3 | 14.5 | 14.8 | 19.3 | 19.6 | 20.1 | 21.3 | 21.8 |
| 1528 | Zamosc Poland | 15.6 | 16.5 | 14.4 | 14 | 18.2 | 12.6 | -- | -- | -- |
| 1529 | Dębica Poland | 15.6 | 17.6 | 17.9 | 14.7 | 21.7 | 22.9 | 25.5 | -- | -- |
| 1530 |  Crnomelj Slovenia | 15.6 | 20.3 | -- | -- | -- | -- | -- | -- | -- |
| 1531 | Buyeo South Korea | 15.6 | 15.4 | 19.5 | 18.7 | 22.7 | -- | 25.7 | -- | -- |
| 1532 | Gwacheon South Korea | 15.6 | 15.7 | 18.1 | 18.8 | 18.9 | 21.5 | 26.1 | 23.2 | 24.2 |
| 1533 | Gyeongsan South Korea | 15.6 | 15.8 | 16.3 | 16.7 | 19.4 | 21 | 25 | 25.4 | 24.9 |
| 1534 | Yecheon South Korea | 15.6 | 14.5 | 16 | 16.1 | 16.7 | 14.8 | -- | -- | -- |
| 1535 | Si Racha Thailand | 15.6 | 14.7 | 31 | 17.9 | 21.2 | 18.8 | 20.8 | -- | -- |
| 1536 |  Veliko Turnovo Bulgaria | 15.5 | 34 | -- | -- | -- | -- | -- | -- | -- |
| 1537 |  Linden Guyana | 15.5 | 21 | 17.6 | 12.2 | -- | -- | -- | -- | -- |
| 1538 |  Kiryat Ata Israel | 15.5 | 15.2 | 15.4 | 18.3 | 17.2 | 15.5 | 19.7 | 21.1 | 19.8 |
| 1539 | Bet She'an Israel | 15.5 | 16.5 | -- | -- | -- | -- | -- | -- | -- |
| 1540 |  Kiambu Kenya | 15.5 | 6.3 | 17.5 | 23.1 | 24.4 | -- | -- | -- | -- |
| 1541 |  Pec Kosovo | 15.5 | 13.3 | 14.6 | -- | -- | -- | -- | -- | -- |
| 1542 | Santa Catarina Mexico | 15.5 | 17.1 | 18.6 | 21.5 | 21.9 | 20.7 | 22.6 | -- | -- |
| 1543 |  La Tinguina Peru | 15.5 | 11.9 | -- | -- | -- | -- | -- | -- | -- |
| 1544 |  Cabuyao Philippines | 15.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1545 | Starachowice Poland | 15.5 | 16.8 | 16.6 | 17.9 | 21.5 | 18 | 19.1 | -- | -- |
| 1547 |  Dudince Slovakia | 15.5 | 21.7 | 20 | -- | -- | -- | -- | -- | -- |
| 1548 |  Sasolburg South Africa | 15.5 | 17 | 27.3 | 26.6 | 27 | 25.6 | 31.4 | -- | -- |
| 1549 | Yeongdong South Korea | 15.5 | 13.9 | 15.6 | 18.1 | 18 | -- | 29.5 | -- | -- |
| 1550 | Daegu South Korea | 15.5 | 15.4 | 18 | 16.7 | 17.8 | 19.8 | 22.1 | -- | -- |
| 1551 | Jeongseon South Korea | 15.5 | 12.7 | 14.4 | 16 | 14 | -- | 16.4 | -- | -- |
| 1552 |  Chiayi city Taiwan | 15.5 | 16.9 | -- | -- | -- | -- | -- | -- | -- |
| 1553 | Nakhon Nayok Thailand | 15.5 | 19.3 | 16.1 | -- | -- | -- | -- | -- | -- |
| 1554 | Sawankhalok Thailand | 15.5 | 27.4 | -- | -- | -- | -- | -- | -- | -- |
| 1555 |  Korce Albania | 15.4 | 12.1 | 34.8 | 30 | -- | -- | -- | -- | -- |
| 1556 | Los Angeles Chile | 15.4 | 14.9 | 18.1 | 16 | 17.3 | 17 | 21.7 | 21.6 | 24.1 |
| 1557 | San Carlos Chile | 15.4 | 13.4 | 14.5 | -- | -- | -- | -- | -- | -- |
