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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7450 |  Missoula USA | 5.8 | 7.6 | 7.1 | 8.9 | 11.9 | 8.7 | 7.4 | 8.2 | 12.6 |
| 7451 | Elwood USA | 5.8 | 6.3 | -- | -- | -- | -- | -- | -- | -- |
| 7452 | Franconia USA | 5.8 | 5.4 | 7.1 | 5.4 | 7.4 | 6.5 | 6.7 | -- | -- |
| 7453 | Lincoln USA | 5.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7454 | Morris USA | 5.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7455 | Upper Montclair USA | 5.8 | 7 | -- | -- | -- | -- | -- | -- | -- |
| 7456 | South Valley USA | 5.8 | 6.6 | 5.9 | 7 | -- | -- | -- | -- | -- |
| 7457 | Nassau USA | 5.8 | 5.7 | 7.7 | 8.1 | 10.5 | -- | -- | -- | -- |
| 7458 | Pomona USA | 5.8 | 5 | 6.6 | 5.4 | 6 | 5.4 | 5.9 | 6 | 5.8 |
| 7459 | Poughkeepsie USA | 5.8 | 5.8 | 6.7 | 5.4 | 9.2 | 6.8 | 6.9 | -- | -- |
| 7460 | Whitehall USA | 5.8 | 5.4 | 8.8 | -- | -- | -- | -- | -- | -- |
| 7461 | Highlands USA | 5.8 | 6.1 | 8.6 | 7.2 | 9.4 | 6.6 | 9.2 | -- | -- |
| 7462 | Bend USA | 5.8 | 9.3 | 10.7 | 7.4 | 11.3 | 13.6 | 5.8 | 8.4 | 10 |
| 7463 | Gladstone USA | 5.8 | 5.5 | 8 | 11.2 | 8.9 | -- | -- | -- | -- |
| 7464 | Pendleton USA | 5.8 | 6.1 | 7.7 | 8.1 | 7.9 | 12.1 | 8.2 | 8.9 | 9.9 |
| 7465 | Roseburg USA | 5.8 | 5.2 | 10.3 | 10.8 | 7.7 | 12 | 7.3 | 8.4 | 9.5 |
| 7466 | New Milford USA | 5.8 | 5.1 | 6 | 6.6 | -- | -- | -- | -- | -- |
| 7467 | Westerly USA | 5.8 | 5.5 | 9.4 | -- | -- | -- | -- | -- | -- |
| 7468 | Greenville USA | 5.8 | 5.7 | 9.9 | 9.6 | 12.1 | -- | -- | -- | -- |
| 7469 | Sugar Land USA | 5.8 | 8 | 7.6 | -- | -- | -- | -- | -- | -- |
| 7470 | Bluffdale USA | 5.8 | 6.6 | 8.6 | 7.8 | 11.2 | 8.6 | 6.8 | -- | -- |
| 7471 | Mount Pleasant USA | 5.8 | 5 | 4.1 | 4.5 | -- | -- | -- | -- | -- |
| 7472 | Sandy USA | 5.8 | 6.4 | 6 | 6.1 | 9.6 | 7.3 | 5.6 | -- | -- |
| 7473 | Arlington USA | 5.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7474 | Ashburn USA | 5.8 | 6.2 | 10 | 7.7 | -- | -- | -- | -- | -- |
| 7475 | Burbank USA | 5.8 | 5.2 | 4.6 | 7.8 | 8.1 | -- | -- | -- | -- |
| 7476 | Lake Shore USA | 5.8 | 5.1 | 7.7 | 11.3 | 7.8 | -- | -- | -- | -- |
| 7477 | Lakewood USA | 5.8 | 5.3 | 6.4 | 9.3 | 6.1 | -- | -- | -- | -- |
| 7478 | North Creek USA | 5.8 | 4.8 | 6.5 | 18 | 7.1 | -- | -- | -- | -- |
| 7479 | Okanogan USA | 5.8 | 5 | 8.9 | 7.9 | 12.6 | 9.4 | 8.4 | -- | -- |
| 7480 | Starbuck USA | 5.8 | 8 | -- | -- | -- | -- | -- | -- | -- |
| 7481 | Lyman USA | 5.8 | 6.2 | 6 | -- | -- | -- | -- | -- | -- |
| 7482 |  Riverside Australia | 5.7 | 3 | -- | -- | -- | -- | -- | -- | -- |
| 7483 |  Xapuri Brazil | 5.7 | 19.1 | 21 | -- | -- | -- | -- | -- | -- |
| 7484 |  Castor Canada | 5.7 | 6.1 | 13 | -- | -- | -- | -- | -- | -- |
| 7485 | Chase Canada | 5.7 | 6.5 | 13.2 | 9.9 | 12.9 | -- | -- | -- | -- |
| 7486 | Forest Grove Canada | 5.7 | 7.7 | -- | -- | -- | -- | -- | -- | -- |
| 7487 | Hudson's Hope Canada | 5.7 | 5.4 | 13.7 | -- | -- | -- | -- | -- | -- |
| 7488 | McBride Canada | 5.7 | 5.4 | 12 | -- | -- | -- | -- | -- | -- |
| 7489 | Qualicum Beach Canada | 5.7 | 5 | 8.1 | 10.1 | 10.4 | 12.6 | 10 | -- | -- |
| 7490 | Watch Lake Canada | 5.7 | 6.1 | 10.1 | -- | -- | -- | -- | -- | -- |
| 7491 | Botwood Canada | 5.7 | 5.8 | 9 | 6.1 | 10.4 | -- | -- | -- | -- |
| 7492 | Cantley Canada | 5.7 | 4.7 | 7.5 | -- | -- | -- | -- | -- | -- |
| 7493 | Maniwaki Canada | 5.7 | 5.6 | 9.8 | 6.8 | -- | -- | -- | -- | -- |
| 7494 |  Vantaa Finland | 5.7 | 5.9 | 5.2 | 5.5 | 6.3 | 5.8 | 6.5 | 7.3 | 6 |
| 7495 |  Lübeck Germany | 5.7 | 6.2 | 7.1 | 10.9 | 13.3 | 10.3 | 9.7 | 11.4 | 10.6 |
| 7496 |  An Muileann gCearr Ireland | 5.7 | 4.1 | 5.7 | 6.5 | 5 | -- | -- | -- | -- |
| 7497 |  Okinawa Japan | 5.7 | 7.3 | 7.9 | 5.6 | 6 | 6.7 | 6.2 | -- | -- |
| 7498 |  Lillestrøm Norway | 5.7 | 7.3 | 7.2 | -- | -- | -- | -- | -- | -- |
| 7499 | Tønsberg Norway | 5.7 | 6 | 5.8 | -- | -- | -- | -- | -- | -- |
