2017-2025
World's most polluted cities | IQAir
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3466 |  Hillsboro USA | 9.5 | 8.1 | -- | -- | -- | -- | -- | -- | -- |
| 3467 | Menasha USA | 9.5 | 7.7 | 10.7 | -- | -- | -- | -- | -- | -- |
| 3468 | Okauchee Lake USA | 9.5 | 10.4 | -- | -- | -- | -- | -- | -- | -- |
| 3469 |  Steyr Austria | 9.4 | 8.8 | 7.7 | 9.9 | 10 | 9.4 | 11 | 13.3 | 12.3 |
| 3470 |  Boom Belgium | 9.4 | 8.8 | 9.5 | 11.2 | 11.9 | 10.5 | 11.5 | 13.2 | 12.6 |
| 3471 |  Cold Lake Canada | 9.4 | 9.5 | 14.8 | 7.1 | 8.1 | 4.9 | 4.4 | -- | -- |
| 3472 | Grand Forks Canada | 9.4 | 8.5 | 10.6 | 9.1 | 9.7 | 12.2 | 10.6 | -- | -- |
| 3474 |  Lhasa China | 9.4 | 9.6 | -- | -- | -- | -- | -- | -- | -- |
| 3475 |  Bakar Croatia | 9.4 | 10.7 | 10.5 | -- | -- | -- | -- | -- | -- |
| 3476 |  Bourgoin-Jallieu France | 9.4 | 8.1 | 7.3 | 9.3 | 10.1 | -- | -- | -- | -- |
| 3477 | Mieussy France | 9.4 | 7.9 | -- | -- | -- | -- | -- | -- | -- |
| 3478 | Pusignan France | 9.4 | 8.6 | 9.6 | 10.4 | 13.1 | -- | -- | -- | -- |
| 3479 | Vetraz-Monthoux France | 9.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3480 | Lunéville France | 9.4 | 8.4 | 8.2 | 10.8 | 10.5 | 10.2 | 10.5 | 12.2 | 12.1 |
| 3481 | Bussy-Saint-Georges France | 9.4 | 8 | 10.1 | 9.7 | -- | -- | -- | -- | -- |
| 3482 | Toulouse France | 9.4 | 8 | 9.1 | 11.5 | 9.5 | 9.3 | 9.2 | 10.1 | 10.9 |
| 3483 | Rezé France | 9.4 | 8 | 8.5 | -- | -- | -- | -- | -- | -- |
| 3484 | Peillon France | 9.4 | 10.6 | 11.4 | 13.2 | 9.9 | -- | -- | -- | -- |
| 3485 |  Rosstal Germany | 9.4 | 8.2 | 8.1 | -- | -- | -- | -- | -- | -- |
| 3486 | Brandenburg City Germany | 9.4 | 9.7 | 8.3 | 9 | 10.9 | 9.5 | 11.5 | -- | -- |
| 3487 | Fulda Germany | 9.4 | 8.4 | 7.7 | 8.5 | 10.4 | 10.5 | 12.2 | 14.4 | 14 |
| 3488 | Herford Germany | 9.4 | 8.2 | 9.5 | 13.7 | 16.3 | -- | -- | -- | -- |
| 3489 | Wesel Germany | 9.4 | 8.7 | 8.8 | 12.4 | 10.5 | -- | 11.7 | 14.7 | 14.5 |
| 3490 |  Sapes Greece | 9.4 | 8.7 | 11.7 | 13.1 | -- | -- | -- | -- | -- |
| 3491 |  Nusa Dua Indonesia | 9.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3492 |  Tralee Ireland | 9.4 | 8 | 7.4 | 8.9 | 8.2 | -- | -- | -- | -- |
| 3493 |  Toyohashi Japan | 9.4 | 7.5 | 8.7 | 8 | 8.8 | 8.9 | 10.4 | 10.7 | 10.4 |
| 3494 | Nagareyama Japan | 9.4 | 8.5 | 9.2 | 8.9 | 8.8 | 9.9 | 11.4 | 12.2 | 11.8 |
| 3495 | Tomisato Japan | 9.4 | 8.3 | 9 | 8.6 | 8 | -- | -- | -- | -- |
| 3496 | Yachiyo Japan | 9.4 | 8.5 | 9.4 | 8.8 | 9 | 9.7 | 10.8 | 12.1 | 11.4 |
| 3497 | Yokota Japan | 9.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3498 | Uwajima Japan | 9.4 | 7.2 | 8.4 | 8.1 | 8.3 | 9.6 | 9.4 | 9.9 | 10.4 |
| 3499 | Nakatsugawa Japan | 9.4 | 7.7 | 8.4 | 8 | 7.9 | -- | -- | -- | -- |
| 3500 | Toyooka Japan | 9.4 | 7.3 | 8.6 | 8.4 | 8.6 | 8.6 | 12.3 | 12 | 11.1 |
| 3501 | Nagasaki Japan | 9.4 | 9.3 | 10 | 9.4 | 10.1 | 11.2 | 11.8 | 12.3 | 13 |
| 3502 | Yufu Japan | 9.4 | 8.6 | 9.4 | 9.6 | 8.6 | 9.6 | 10.1 | 10.3 | 12 |
| 3503 | Midorigaoka Japan | 9.4 | 8 | 8.7 | -- | -- | -- | -- | -- | -- |
| 3504 | Tanjo Japan | 9.4 | 8.1 | 9.4 | -- | -- | -- | -- | -- | -- |
| 3505 | Tarui Japan | 9.4 | 7.9 | 8.6 | -- | -- | -- | -- | -- | -- |
| 3506 | Tokiwacho Japan | 9.4 | 7.7 | 8.6 | -- | -- | -- | -- | -- | -- |
| 3507 | Soka Japan | 9.4 | 8.8 | 11.2 | 10.3 | 9.9 | 10.3 | 11.7 | 12.5 | 14 |
| 3508 | Tachikawa Japan | 9.4 | 8.8 | 9 | 8.2 | 8.1 | 8.7 | 10.2 | 12.1 | 11.4 |
| 3509 | Imizu Japan | 9.4 | 8.1 | 8.3 | 7.8 | 7.6 | 7.8 | 8.9 | 9.5 | 9.4 |
| 3510 | Kinokawa Japan | 9.4 | 8.3 | 9.6 | 8.7 | 8.9 | 9.9 | 10.3 | 11.5 | 10.5 |
| 3511 | Nagato Japan | 9.4 | 8 | 9.7 | 9.1 | 8.5 | 9.6 | 10.8 | 11.4 | 11.8 |
| 3512 | Yanai Japan | 9.4 | 7.9 | 9 | 8.9 | 8.6 | 9.5 | 10.3 | 10.7 | 11.4 |
| 3513 |  Shetpe Kazakhstan | 9.4 | 8 | 15.4 | 16.5 | 16.6 | -- | -- | -- | -- |
| 3514 |  San Jose del Cabo Mexico | 9.4 | 5.1 | 2 | 2.5 | 5.9 | -- | -- | -- | -- |
| 3515 |  Veendam Netherlands | 9.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3516 | Amsterdam Netherlands | 9.4 | 9.3 | 9.1 | 10.1 | 10.3 | 9.9 | 10.7 | 11.5 | 12.2 |
