World's most polluted cities (historical data 2017-2022)
Most polluted city ranking based on annual average PM2.5 concentration (μg/m³)
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Meets WHO guideline
Exceeds by 1 to 2 times
Exceeds by 2 to 3 times
Exceeds by 3 to 5 times
Exceeds by 5 to 7 times
Exceeds by 7 to 10 times
Exceeds by over 10 times
Rank  | City | 2022 | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 601 |  Kuldomari, India | 26.8 | 29.2 | 28.1 | 23.2 | 26.8 | 26.3 | 26.8 | 9.3 | 11.7 | 31.5 | 40.1 | 38.8 | 28.9 | - | - | - | - | - |
| 602 |  Mashhad, Iran | 26.8 | 30.5 | 21.6 | 30 | 41.6 | 22 | 25.2 | 24.7 | 15.9 | 28.3 | 35.5 | - | - | 31 | 25.6 | 25.1 | 30.6 | - |
| 603 |  Gaggiano, Italy | 26.8 | 48 | 31.5 | 39 | 18.6 | 18.4 | 15.6 | 13.2 | 11.1 | 14.2 | 34.8 | 39 | 38.5 | 27.3 | 32.7 | - | - | - |
| 604 |  Kastamonu, Turkey | 26.8 | 35.7 | 38.7 | 23.1 | 28.3 | 21.7 | 22.5 | 23 | 22.6 | 20.2 | 20.5 | 31.4 | 35.7 | 23.2 | 22.1 | 30.5 | - | - |
| 605 |  Drinic, Bosnia Herzegovina | 26.7 | 54.1 | 30.3 | 49.6 | 21.1 | 18.9 | 15.9 | 15.6 | 16.4 | 12.4 | 33 | 30.9 | 34.9 | 23.8 | - | - | - | - |
| 606 |  Jilin, China | 26.7 | 60.4 | 41.1 | 23 | 45.1 | 17.2 | 14.4 | 11.3 | 10.8 | 14 | 21.8 | 33.1 | 28.8 | 29.2 | 35.9 | 34.4 | 32.4 | 46.6 |
| 607 | Siping, China | 26.7 | 46.4 | 38 | 28.8 | 39.6 | 19.1 | 16.1 | 15 | 14.4 | 16.4 | 21.9 | 33 | 32.5 | 27.6 | 32.5 | 35.7 | 38.8 | 46.7 |
| 608 | Yulin, China | 26.7 | 46.8 | 29.9 | 37.7 | 30.5 | 23.7 | 18.2 | 14.5 | 18 | 18.9 | 22.6 | 30.3 | 29.6 | 31.1 | 32.7 | 33 | 35.2 | 34.1 |
| 609 | Kumul, China | 26.7 | 45.2 | 28.3 | 25.5 | 24.8 | 34.4 | 17.1 | 19 | 14.5 | 22.2 | 26.7 | 23 | 39.2 | 28.2 | 29.3 | 29.8 | 28.5 | 31.9 |
| 610 |  Shah Alam, Malaysia | 26.7 | 37.8 | 21.1 | 24 | 28.6 | 28.3 | 26.2 | 32.8 | 25.6 | 28.2 | 24.6 | 23.3 | 19.2 | 27.4 | 21.1 | 20.4 | - | - |
| 611 |  Guadalajara, Mexico | 26.7 | 24.3 | 20.8 | 36 | 39.1 | 41.4 | 21.4 | 15.1 | 17.1 | 14.1 | 22.5 | 29.2 | 36.2 | 25.4 | 24.5 | 18.9 | - | - |
| 612 |  Tetovo, North Macedonia | 26.7 | 50.6 | 48.7 | 33.9 | 16.6 | 16.4 | 15 | 14.5 | 14.7 | 13.7 | 23.2 | 49.3 | 68.1 | 26.6 | 24.5 | - | - | - |
| 613 |  Prokuplje, Serbia | 26.7 | - | - | - | 17.4 | 11.5 | 11.6 | 10.1 | 15.6 | 17 | 41.7 | 62.9 | 52.1 | - | - | - | - | - |
| 614 | Wuxue, China | 26.6 | 51.6 | 33.2 | 23.8 | 22.7 | 27.2 | 15.3 | 14 | 15.5 | 23.7 | 24.1 | 25.8 | 44.9 | 24.1 | - | - | - | - |
| 615 | Skopje, North Macedonia | 26.6 | 47.4 | 35 | 30 | 15.6 | 13.7 | 12.4 | 11.6 | 11.8 | 14.2 | 29.9 | 42.6 | 56.2 | 27.7 | 30.6 | 32.4 | - | - |
| 616 | Wuzhou, China | 26.5 | 28.5 | 16.8 | 29.4 | 30.6 | 24.7 | 17.2 | 21.8 | 18.8 | 35 | 33.6 | 25.7 | 34.5 | 25.5 | 25.2 | 28.7 | 34.5 | 39.2 |
| 617 | Tongliao, China | 26.5 | 42.9 | 24.7 | 23.2 | 32.7 | 24.7 | 19.8 | 18.3 | 17.2 | 22.4 | 29.2 | 34.3 | 27.7 | 23.5 | 28.8 | 32.3 | 31.9 | 34.3 |
| 618 | Panzhihua, China | 26.5 | 41 | 27.4 | 35.2 | 27.4 | 20 | 16.9 | 18.4 | 18.7 | 22.5 | 25.5 | 25 | 39.3 | 30.5 | 28.8 | 29.1 | 33.1 | 32.7 |
| 619 |  Rust'avi, Georgia | 26.5 | 34.4 | 40.7 | 24.7 | 30.7 | 15 | 20.2 | 16 | 27.3 | 21.2 | 21.9 | 29.2 | 40.1 | 34.8 | 31.3 | - | - | - |
| 620 | Petaling Jaya, Malaysia | 26.5 | 32.9 | 24.8 | 28.6 | 28.5 | 22.3 | 19.1 | 27.8 | 21.3 | 30.9 | 30 | 29 | 22.9 | 32.5 | 23.6 | 19.6 | - | - |
| 621 |  Ton Thong, Thailand | 26.5 | 35.2 | 38.3 | 45.5 | 44.3 | 19.3 | 10.6 | 12.9 | 11.2 | 13.9 | 24.5 | 29.7 | 32.6 | - | - | - | - | - |
| 622 | Tianshui, China | 26.4 | 47.7 | 38.9 | 30.6 | 25.7 | 17.5 | 15 | 13.6 | 13.7 | 16.2 | 23.5 | 33.5 | 42.4 | 20.8 | 22.7 | 27 | 37.3 | 36.5 |
| 623 | Enshi, China | 26.4 | 42.3 | 33.6 | 27.1 | 21.2 | 19.4 | 16.2 | 12.2 | 12.6 | 20.8 | 22.5 | 30.6 | 59.1 | 25.8 | 27.5 | 31.3 | 36.1 | 44 |
| 624 | Yancheng, China | 26.4 | 50.7 | 34.7 | 35.9 | 30.6 | 24.3 | 17.6 | 13.9 | 15.7 | 13.6 | 17.3 | 21.9 | 40.8 | 28.9 | 32.5 | 40.5 | 43.2 | 43.8 |
| 625 | Pingxiang, China | 26.4 | 47.4 | 29.6 | 25.7 | 21.9 | 21.2 | 13.8 | 13.8 | 13.1 | 30.8 | 25.2 | 23.2 | 50.8 | 32.1 | 30.6 | 36.9 | 40.7 | 49.1 |
| 626 | Chaoyang, China | 26.4 | 48.3 | 27.9 | 26.4 | 27.7 | 20 | 20.4 | 14.5 | 17 | 22 | 27.3 | 35.6 | 29.4 | 31.8 | 35.6 | 36 | 38.2 | 40.6 |
| 627 | Guyuan, China | 26.4 | 49.8 | 31.8 | 34.2 | 31.6 | 20.4 | 14.2 | 13.5 | 14.7 | 15.5 | 26 | 28.7 | 36.4 | 25.2 | 24.9 | 25.7 | 33.4 | 32.7 |
| 628 |  Cluj-Napoca, Romania | 26.4 | 40.7 | 35.4 | 38.3 | 19.4 | 15.4 | 13.5 | 12.5 | 15.1 | 14.7 | 29.7 | 39.8 | 42.3 | 20.1 | 13.1 | 15.7 | 21.4 | - |
| 629 | Pong Yang Khok, Thailand | 26.4 | 35.4 | 43 | 48.6 | 51.4 | 17.7 | 9.9 | 7.3 | 6.5 | 10.3 | 20.6 | 24 | 38.4 | - | - | - | - | - |
| 630 | Mi Chai, Thailand | 26.4 | 33.7 | 43.7 | 55.4 | 54.9 | 16.3 | 12 | 10.2 | 8.7 | 10.8 | 22.2 | 25.8 | - | - | - | - | - | - |
| 631 |  Temuco, Chile | 26.3 | 5 | 9 | 12 | 26.8 | 65.2 | 62.1 | 41.3 | 40.7 | 26.4 | 13.1 | 7 | 5.5 | 32.7 | 20.6 | 20.2 | 30.4 | 28.7 |
| 632 | Fenyi, China | 26.3 | 45.4 | 31.7 | 29.6 | 26.3 | 26 | 13.1 | 14.3 | 14.8 | 27.8 | 22.9 | 24.9 | 40.5 | 27.3 | - | - | - | - |
| 633 | Haidongdiqu, China | 26.3 | 45.3 | 35.2 | 33.4 | 33.9 | 23.5 | 20.4 | 21.1 | 16.8 | 15.7 | 20.8 | 19.3 | 30.9 | 28 | 30.8 | 38 | 41.4 | - |
| 634 | Guilin, China | 26.2 | 31.2 | 23.7 | 36 | 28.5 | 21.4 | 15 | 13 | 13.2 | 35.2 | 31.5 | 23.3 | 42.5 | 28.6 | 28.3 | 32.9 | 36.4 | 42.2 |
| 635 | Luorong, China | 26.2 | 26.3 | 23.7 | 42.9 | 29.8 | 18.4 | 12.6 | 15 | 13.4 | 33.7 | 29.9 | 24 | 44.9 | 24.4 | - | - | - | - |
| 636 | Pumiao, China | 26.2 | 34.7 | 24.7 | 30.9 | 27.6 | 19.7 | 14.7 | 15 | 17 | 31.9 | 29.2 | 28.7 | 40.4 | 23.4 | - | - | - | - |
| 637 | Yulin, China | 26.2 | 36.6 | 21.5 | 29.8 | 28 | 21.1 | 15.4 | 15.5 | 14.7 | 31.2 | 31.5 | 29.9 | 38.8 | 29.3 | 27.6 | 32.6 | 35.6 | 38 |
| 638 | Hongjiang, China | 26.2 | 36.1 | 27.5 | 29 | 24.9 | 20.1 | 15.4 | 12.6 | 14 | 33.7 | 27.2 | 26.6 | 47.8 | 29.5 | - | - | - | - |
| 639 | Jiaxing, China | 26.2 | 49.4 | 35.3 | 27.8 | 25.2 | 20.6 | 19.3 | 18.5 | 19.1 | 17.3 | 17.1 | 22.7 | 42.8 | 26.5 | 27.7 | 35 | 38.1 | 41.5 |
| 640 | Bilaspur, India | 26.2 | - | 24.4 | 24.4 | 24.7 | 24.8 | 25.6 | 26.3 | 27.8 | 27.6 | 30.4 | 26.7 | 23.6 | - | - | - | - | - |
| 641 | San Miguel, Mexico | 26.2 | 25.9 | 24.7 | 27.3 | 33.1 | 37.5 | 20.1 | 20.4 | 20 | 17 | 27.7 | 34 | 29.5 | 24 | - | - | - | - |
| 642 | Kozarska Dubica, Bosnia Herzegovina | 26.1 | - | 38.1 | 45.2 | 20.4 | 13.5 | 11.6 | 9.4 | 10.7 | 12.2 | 36.9 | 52 | 52.7 | 26.2 | - | - | - | - |
| 643 | Bortala, China | 26.1 | 69.5 | 50.2 | 21.5 | 19.3 | 15.5 | 11 | 10.7 | 11.2 | 16.1 | 19.1 | 23.5 | 47.4 | 22.8 | 22.3 | 22.7 | 27.9 | 32.6 |
| 644 | Karamay, China | 26.1 | 81.8 | 75 | 15.8 | 11.7 | 11.9 | 9.1 | 9 | 8.5 | 10.2 | 10.9 | 16.5 | 54.7 | 22.9 | 25.2 | 23.4 | 25.2 | 31.3 |
| 645 | Linan, China | 26.1 | 47.2 | 35.4 | 26 | 26.4 | 21.4 | 16.6 | 14.8 | 17.2 | 21.3 | 21.6 | 26.1 | 41.3 | 26.4 | 29.2 | 36.1 | 35.9 | 41.2 |
| 646 |  Bandung, Indonesia | 26.1 | 26 | 27.4 | 14.5 | 16.5 | 12.6 | 20.9 | 35.1 | 32.7 | 38.9 | 31.3 | 29.3 | 28.5 | 33.4 | 33.2 | - | - | - |
| 647 |  Almaty, Kazakhstan | 26.1 | 76.5 | 90.2 | 37.3 | 41.6 | 17.6 | 14.5 | 10 | 7.5 | 2 | 1.9 | 5.1 | 23.8 | - | - | - | - | - |
| 648 | Chongqing, China | 26 | 42.5 | 30.9 | 27.4 | 19.3 | 15.2 | 15.1 | 12.4 | 11.1 | 25.6 | 26.9 | 34.7 | 51 | 31 | 31.7 | 37.1 | 37.3 | 43.9 |
| 649 | Guankou, China | 26 | 38.8 | 28.3 | 26.3 | 25.4 | 24.1 | 16.1 | 15.9 | 15.8 | 32.6 | 24.9 | 23.4 | 41.9 | 27.7 | - | - | - | - |
| 650 | Jiaonan, China | 26 | 50.8 | 36.1 | 29.4 | 28.8 | 22 | 13 | 15.3 | 13.6 | 13.4 | 19.1 | 28.8 | 43 | 29.4 | 34.1 | 39.5 | 33.6 | 40.1 |
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