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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 9424 |  Mililani Town USA | 2 | 1.9 | 1.7 | -- | -- | -- | -- | -- | -- |
| 9425 | Belmont USA | 2 | 4.8 | 6.1 | -- | -- | -- | -- | -- | -- |
| 9426 |  Moruya Heads Australia | 1.9 | 3.1 | 4.2 | -- | -- | -- | -- | -- | -- |
| 9427 | Lubec USA | 1.9 | 2.1 | 4.7 | 3.7 | -- | -- | -- | -- | -- |
| 9428 | Bourke Australia | 1.8 | 1.9 | 2.1 | 2 | 1.9 | 2.6 | -- | -- | -- |
| 9429 | Broken Hill Australia | 1.8 | 1.7 | 1.8 | 1.5 | 1.5 | 2.5 | -- | -- | -- |
| 9430 |  Bathsheba Barbados | 1.8 | 2.3 | 3.1 | -- | -- | -- | -- | -- | -- |
| 9431 |  Puerto Ferro Puerto Rico | 1.8 | 1.8 | -- | -- | -- | -- | -- | -- | -- |
| 9432 | Seward USA | 1.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 9433 | Leggett USA | 1.8 | 2 | 1.6 | 1.5 | 7.6 | 11.6 | 4.9 | -- | -- |
| 9434 | Hawaiian Paradise Park USA | 1.8 | 1.8 | -- | -- | -- | -- | -- | -- | -- |
| 9435 | Amanda Park USA | 1.8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 9436 |  Kittilä Finland | 1.6 | 1.8 | 0.9 | 1.7 | -- | -- | -- | -- | -- |
| 9437 | Haines USA | 1.6 | 1.5 | 2.8 | 2.9 | 5 | -- | -- | -- | -- |
| 9438 | Ainaloa USA | 1.6 | 1.6 | 1.7 | -- | -- | -- | -- | -- | -- |
| 9439 |  Papeete French Polynesia | 1.5 | 2.8 | 1.9 | -- | -- | -- | -- | -- | -- |
| 9440 | Hiouchi USA | 1.5 | 1.3 | -- | -- | -- | -- | -- | -- | -- |
| 9441 | Dexter USA | 1.5 | 1.5 | 5 | 7.6 | -- | -- | -- | -- | -- |
| 9442 | Muonio Finland | 1.4 | 2.8 | 3.6 | 1.6 | 2.9 | 2.8 | -- | -- | -- |
| 9443 | Honokaa USA | 1.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 9444 | Lihue USA | 1.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 9445 | Utö Finland | 1.3 | 3 | 3.6 | -- | -- | -- | -- | -- | -- |
| 9446 |  Nieuwoudtville South Africa | 1 | 1.2 | 2.1 | 3.4 | 3.9 | -- | -- | -- | -- |
