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
Sofia, Bulgaria
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2246 |  Sofia, Bulgaria | 11.2 | 18.2 | 14.1 | 12.8 | 7.6 | 6.7 | 9.4 | 8.9 | 9.4 | 9.2 | 10.4 | 14.6 | 12.8 | 12 | 19.1 | 17.6 | 27.5 | 26.8 | 28.2 | 20.8 |
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