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
PM2.5 legend
0-5Meets WHO guideline
5.1-10Exceeds by 1 to 2 times
10.1-15Exceeds by 2 to 3 times
15.1-25Exceeds by 3 to 5 times
25.1-35Exceeds by 5 to 7 times
35.1-50Exceeds by 7 to 10 times
>50.1Exceeds by over 10 times
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 404 |  Kollam India | 32.2 | 43.1 | 35.2 | 32.5 | 36.9 | -- | -- | -- | -- |
| 405 |  Om Noi Thailand | 32.2 | 27.5 | 29.6 | 23.6 | -- | -- | -- | -- | -- |
| 406 |  Jinchang China | 32.1 | 33.6 | 28 | 25.2 | 25.4 | -- | 18 | 36.5 | 33.3 |
| 407 | Jabalpur India | 32.1 | 41.3 | 46 | 46 | 42.5 | 46.7 | -- | -- | -- |
| 408 | Anqing China | 32 | 31.3 | 34.9 | 34.2 | 32.7 | 34.9 | 45.5 | 45.4 | 56.6 |
| 409 | Anshan China | 32 | 33.2 | 33.3 | 30 | 36.2 | 40.7 | 39.2 | 34.9 | 43.8 |
| 410 | Indore India | 31.8 | 35.4 | 42.3 | 39.4 | 45.5 | 40 | -- | -- | -- |
| 411 | Vellore India | 31.8 | 28.3 | 45.8 | 29 | 26.2 | -- | -- | -- | -- |
| 412 | Thane India | 31.7 | 39.4 | 77.9 | 50.6 | 59.7 | -- | -- | -- | -- |
| 413 | Changzhou China | 31.6 | 33.2 | 35.4 | 33.1 | 36 | 38.7 | 44.7 | 50.3 | 46.8 |
| 414 | Jinan China | 31.6 | 35.2 | 38.9 | 36.2 | 42 | 49 | 54.4 | 52.9 | 63.7 |
| 415 |  Urganch Uzbekistan | 31.6 | 22.9 | 20.2 | -- | -- | -- | -- | -- | -- |
| 416 |  Bekasi Indonesia | 31.5 | 42.5 | 49.9 | 35.4 | 32.4 | 48.1 | 62.6 | -- | -- |
| 417 | Chennai India | 31.3 | 26 | 28 | 25.3 | 25.2 | 26.5 | 34.6 | 43.2 | 39.8 |
| 418 | Surabaya Indonesia | 31.3 | 29.8 | 27.6 | 34.4 | 34.8 | 33.4 | 40.6 | -- | -- |
| 419 | Ili China | 31.2 | 27.6 | 38.4 | 36.1 | 35.7 | 43.6 | 41.5 | 47.1 | 49.6 |
| 420 |  Pyuthan Nepal | 31.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 421 | Huzhou China | 31.1 | 30 | 34.7 | 29.2 | 25.3 | 26.2 | 32.2 | 35.1 | 41.1 |
| 422 | Korba India | 31.1 | 22.2 | 26.9 | 31 | 27.7 | -- | -- | -- | -- |
| 423 | Surat India | 31 | 32.3 | 60.3 | 27.7 | 29 | -- | -- | -- | -- |
| 424 |  Madinat Zayed United Arab Emirates | 31 | 28.6 | 34.2 | 45.4 | 35.6 | -- | -- | -- | -- |
| 425 | Songyuan China | 30.9 | 29.3 | 28.9 | 24.5 | 22.5 | 26.1 | 29.7 | 27.9 | 35.6 |
| 426 | Karur India | 30.7 | 24.2 | 26.4 | 27.5 | 22.1 | -- | -- | -- | -- |
| 427 | Changzhi China | 30.6 | 34.7 | 36.9 | 37.9 | 39.2 | 45.5 | 47.5 | 53.2 | 62.3 |
| 428 | Kannur India | 30.6 | 30.9 | 34.4 | 36.1 | 35.1 | 29.5 | -- | -- | -- |
| 429 | Amravati India | 30.5 | -- | -- | -- | -- | -- | -- | -- | -- |
| 430 | Chhal India | 30.5 | 36.5 | -- | -- | -- | -- | -- | -- | -- |
| 431 | Salem India | 30.5 | 30.6 | 29.3 | 28.7 | 21.4 | -- | -- | -- | -- |
| 432 | Weifang China | 30.4 | 35.1 | 38.4 | 34.6 | 40.2 | 49.9 | 56.2 | 52.6 | 56.9 |
| 433 | Tathali Nepal | 30.4 | 41.5 | 58.8 | -- | -- | -- | -- | -- | -- |
| 434 | Bukhara Uzbekistan | 30.4 | 20.9 | 20.5 | -- | -- | -- | -- | -- | -- |
| 435 |  Lien Chieu Vietnam | 30.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 436 | Dingxi China | 30.2 | 31.9 | 32.3 | 29.8 | 25.8 | 25.7 | 27.4 | 40.3 | 39.2 |
| 437 | Dharwad India | 30.1 | 32.7 | 35.6 | 32.7 | -- | -- | -- | -- | -- |
| 438 | Enshi China | 30 | 28.8 | 23.8 | 26.4 | 25.8 | 27.5 | 31.3 | 36.1 | 44 |
| 439 | Jincheng China | 30 | 35.6 | 37.3 | 38 | 35.7 | 46.2 | 54.1 | 59.8 | 63.4 |
| 440 | Chongqing China | 29.9 | 31.2 | 25.4 | 26 | 31 | 31.7 | 37.1 | 37.3 | 43.9 |
| 441 | Benxi China | 29.9 | 29.8 | 30.7 | 28.1 | 28.8 | 33.8 | 35.1 | 31.6 | 38.3 |
| 442 | Davanagere India | 29.9 | 28.2 | -- | -- | -- | -- | -- | -- | -- |
| 443 | Tianshui China | 29.8 | 29.2 | 28.8 | 26.4 | 20.8 | 22.7 | 27 | 37.3 | 36.5 |
| 444 | Yadgir India | 29.8 | 32.4 | 31.4 | 29.9 | 29.2 | -- | -- | -- | -- |
| 445 | Tongliao China | 29.7 | 28.5 | 29.3 | 26.5 | 23.5 | 28.8 | 32.3 | 31.9 | 34.3 |
| 446 | Pingxiang China | 29.7 | 29.6 | 28.6 | 26.4 | 32.1 | 30.6 | 36.9 | 40.7 | 49.1 |
| 447 |  Bishkek Kyrgyzstan | 29.7 | 21.2 | 26 | 29 | 48.3 | 43.5 | 33.2 | -- | -- |
| 448 | Jiuquan China | 29.6 | 33.7 | 32.8 | 30.9 | 31 | 30.1 | 27.6 | 33.3 | 34.5 |
| 449 | Xining China | 29.6 | 30.2 | 29.5 | 29.3 | 32.2 | 33 | 33.3 | 41.7 | 38 |
| 450 | Honnali India | 29.6 | 27.7 | 28 | 26 | 15.9 | -- | -- | -- | -- |
| 451 | Baran India | 29.6 | 41.8 | 52.5 | -- | -- | -- | -- | -- | -- |
| 452 | Liaoyuan China | 29.5 | 27.1 | 31.4 | 30.8 | 32.6 | 38.9 | 37.6 | 35.6 | 48.5 |
| 453 | Panjin China | 29.5 | 29.4 | 31.4 | 28.9 | 33.1 | 34 | 38.7 | 36.1 | 39.4 |
