2017-2024
World's most polluted cities
The most polluted cities according to data aggregated from over 80,000 data points.
2024
World Air Quality Report
2024
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
25-35Exceeds by 5 to 7 times
35.1-50Exceeds by 7 to 10 times
>50.1Exceeds by over 10 times
| Rank | City | 2024 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Montevideo, Uruguay | 11.5 | 7.8 | 8.2 | 8.5 | 8.4 | 15.5 | 14.4 | 26.8 | 11.1 | 11.2 | 10.2 | 8.7 | 7.3 | 11.7 | 11.3 | 14.2 | -- | -- | -- | -- |
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