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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 504 |  Yasothon Thailand | 27.7 | 26.4 | 21.2 | -- | -- | -- | -- | -- | -- |
| 505 |  Satna India | 27.6 | 18.1 | 26.7 | 25.3 | 20 | 17.2 | 15.5 | -- | -- |
| 506 | Keonjhar India | 27.6 | 43.1 | -- | -- | -- | -- | -- | -- | -- |
| 507 |  Malham Saudi Arabia | 27.6 | 21.6 | 25.7 | -- | -- | -- | -- | -- | -- |
| 508 | Kalasin Thailand | 27.6 | 30.7 | 32.7 | 30.3 | 38.9 | -- | -- | -- | -- |
| 509 | Phaya Kaeo Thailand | 27.6 | 39.2 | 35.1 | 18.2 | -- | -- | -- | -- | -- |
| 510 |  Mudanjiang China | 27.5 | 30.3 | 27.9 | 22.9 | 28.4 | 29.6 | 31.7 | 28.6 | 34.7 |
| 511 | Jiujiang China | 27.5 | 29.4 | 30.3 | 28.6 | 31.1 | 36.6 | 43.9 | 40.2 | 46.3 |
| 512 | Bengaluru India | 27.5 | 30 | 28.6 | 31.5 | 29 | 27.5 | 32.6 | 34.5 | 32.1 |
| 513 | Qingyang China | 27.3 | 29.2 | 28.9 | 31.4 | 26.8 | 29.1 | 31 | 33.1 | 35 |
| 514 | Liuzhou China | 27.3 | 25.8 | 28.1 | 29.3 | 31.3 | 28.9 | 34.4 | 39.4 | 43.6 |
| 515 | Nanjing China | 27.3 | 28.2 | 29.4 | 27.7 | 29 | 31.1 | 40.5 | 43 | 40.5 |
| 516 | Kumul China | 27.3 | 31.9 | 29.6 | 26.7 | 28.2 | 29.3 | 29.8 | 28.5 | 31.9 |
| 517 | Hangzhou China | 27.3 | 28.6 | 31.2 | 29 | 27.4 | 29 | 37.4 | 38.1 | 43.6 |
| 518 | Quzhou China | 27.3 | 27.2 | 31.1 | 23.5 | 22.2 | 25 | 31.8 | 32.4 | 41.5 |
| 519 | Ooty India | 27.3 | 26.9 | 28.5 | 23.3 | 20.8 | -- | -- | -- | -- |
| 520 | Wuxi China | 27.2 | 26.8 | 29.5 | 28 | 29.8 | 34 | 39.9 | 42.8 | 45.1 |
| 521 | Dongying China | 27.2 | 32.6 | 37.2 | 33.1 | 38.4 | 45.7 | 48.6 | 47.4 | 57.9 |
| 522 | Karambakkudi India | 27.2 | 23.6 | -- | -- | -- | -- | -- | -- | -- |
| 523 | Chaoyang China | 27.1 | 27.9 | 30.4 | 26.4 | 31.8 | 35.6 | 36 | 38.2 | 40.6 |
| 524 | Yanan China | 27.1 | 26.5 | 27.7 | 26.8 | 28.7 | 29.5 | 31.3 | 35 | 39.2 |
| 525 | Suining China | 27.1 | 27.2 | 30.7 | 29.6 | 30 | 28.4 | 31 | 35.3 | 38.7 |
| 526 | Puducherry India | 27.1 | 22.7 | 24.1 | 23.7 | 18.5 | -- | -- | -- | -- |
| 527 | Ariyalur India | 27.1 | 20.6 | 22.5 | 14.5 | 15.1 | -- | -- | -- | -- |
| 528 |  Haiphong Vietnam | 27.1 | 27.2 | 28.7 | -- | -- | -- | -- | -- | -- |
| 529 |  Yerevan Armenia | 26.9 | 24.4 | 26.4 | 31.4 | 33.9 | 24.9 | 25.5 | -- | -- |
| 530 | Shanghai China | 26.9 | 28.2 | 28.7 | 25.4 | 27.7 | 31.5 | 35.4 | 36 | 38.9 |
| 531 | Xuancheng China | 26.8 | 27.5 | 31.4 | 32 | 30.2 | 32.7 | 41.7 | 43.2 | 49.1 |
| 532 | Beijing China | 26.8 | 30.9 | 34.1 | 29.8 | 34.4 | 37.5 | 42.1 | 50.9 | 58.8 |
| 533 | Kunjemura India | 26.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 534 | Doi Tao Thailand | 26.8 | 24.7 | -- | -- | -- | -- | -- | -- | -- |
| 535 | Yulin China | 26.7 | 25.4 | 26.4 | 26.2 | 29.3 | 27.6 | 32.6 | 35.6 | 38 |
| 536 | Ya'an China | 26.6 | 29.3 | 32 | 29.3 | 28.3 | 26.6 | 32.3 | 40.7 | 49.2 |
| 537 |  Semarang Indonesia | 26.6 | 29 | 28.1 | 24.3 | 28.6 | 28.5 | -- | -- | -- |
| 538 | Wuzhou China | 26.5 | 23.1 | 25.9 | 26.5 | 25.5 | 25.2 | 28.7 | 34.5 | 39.2 |
| 539 | Qinhuangdao China | 26.5 | 29.4 | 30.3 | 27.8 | 36 | 37.4 | 43.6 | 43.9 | 50 |
| 540 | Yulin China | 26.5 | 27.2 | 28.6 | 26.7 | 31.1 | 32.7 | 33 | 35.2 | 34.1 |
| 541 | Dindigul India | 26.5 | 26.2 | 30.1 | -- | -- | -- | -- | -- | -- |
| 542 | Huaihua China | 26.4 | 26.5 | 29.9 | 27.8 | 27.4 | 27.8 | 35.4 | 33.1 | 38.1 |
| 543 | Dehong China | 26.2 | 26.6 | 27.5 | 23.5 | 25.7 | 19.1 | 23.2 | 33.7 | 29.7 |
| 544 | Silchar India | 26.2 | 22.9 | 10.1 | -- | -- | -- | -- | -- | -- |
| 545 | Varanasi India | 26.2 | 22.8 | 24.8 | 58.1 | 82.6 | -- | -- | -- | -- |
| 546 | Sing Buri Thailand | 26.2 | 26.8 | 30.2 | -- | -- | -- | -- | -- | -- |
| 547 | Baise China | 26.1 | 27.6 | 31 | 28.2 | 29.4 | 27.4 | 29.3 | 35.7 | 42.3 |
| 548 | Shaoxing China | 26.1 | 27.8 | 31.8 | 30 | 27.7 | 28.5 | 38.1 | 40.5 | 44.3 |
| 549 | Cibinong Indonesia | 26.1 | 31.6 | 30.1 | 36.7 | -- | -- | -- | -- | -- |
| 550 | Hinggan Meng China | 26 | 24.6 | -- | -- | -- | -- | -- | -- | -- |
| 551 | Dalian China | 26 | 26.6 | 30 | 23.6 | 27.7 | 30.2 | 34.3 | 29.3 | 32.9 |
| 552 | Ayyalur India | 26 | 25 | 34.5 | 20.5 | -- | -- | -- | -- | -- |
| 553 | Sleman Indonesia | 26 | 26.3 | 26.5 | -- | -- | -- | -- | -- | -- |
