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2017-2023
World's most polluted cities
Most polluted city ranking based on annual average PM2.5 concentration (μg/m³)
2023
World Air Quality Report
PM2.5 legend
0-5
Meets WHO guideline
5.1-10
Exceeds by 1 to 2 times
10.1-15
Exceeds by 2 to 3 times
15.1-25
Exceeds by 3 to 5 times
25.1-35
Exceeds by 5 to 7 times
35.1-50
Exceeds by 7 to 10 times
>50.1
Exceeds by over 10 times
Rank | City | 2023 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Strumica, North Macedonia | 31.6 | 65.3 | 55.6 | 24.1 | 17.3 | 10.6 | 9.8 | 11.7 | 11 | 12.6 | 16.1 | 43.7 | 103.3 | 22.2 | 18.8 | -- | -- | -- | -- |
| 2 | Tetovo, North Macedonia | 30.9 | 65.1 | 48.5 | 26.6 | 18.7 | 16.2 | 14.4 | 13.7 | 15 | 16.6 | 24 | 36.7 | 76.4 | 26.7 | 26.6 | 24.5 | -- | -- | -- |
| 3 | Gjorce Petro, North Macedonia | 26.5 | 48.6 | 44.2 | 27.7 | 17.2 | 13.9 | 13.7 | 13 | 13 | 16 | 22.2 | 27.8 | 62.9 | 25.9 | 27 | -- | -- | -- | -- |
| 4 | Gostivar, North Macedonia | 25.8 | 64.4 | 41 | 21.3 | 17.4 | 12.2 | 9.9 | 13.2 | 12.8 | 15.4 | 17.4 | 28.1 | 51.7 | 26 | 21.7 | -- | -- | -- | -- |
| 5 | Skopje, North Macedonia | 24.6 | 44.7 | 47.2 | 25.6 | 16.1 | 12.8 | 10.5 | 11 | 13.2 | 14.3 | 21.4 | 24.9 | 54.5 | 26.6 | 27.7 | 30.6 | 32.4 | -- | -- |
| 6 | Kičevo, North Macedonia | 23.6 | 53.4 | 50.9 | 29.2 | 22.3 | 13.4 | 8.7 | 11.6 | 9.8 | 11.3 | 16.2 | 20.4 | 68 | 28.9 | 25 | -- | -- | -- | -- |
| 7 | Kavadarci, North Macedonia | 23.4 | 40.9 | 45.1 | 23.4 | 15.2 | 9.8 | 9.8 | 11.3 | 10.7 | 12.4 | 14.1 | 27.3 | 56.7 | 15.4 | 16.1 | -- | -- | -- | -- |
| 8 | Gevgelija, North Macedonia | 23.3 | 43.6 | 43.1 | 31.6 | 20.3 | 15.5 | 12.7 | 12.9 | 11.8 | 10.6 | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 9 | Veles, North Macedonia | 22.9 | 42.7 | 42.9 | 25 | 23.5 | 10.3 | 10.3 | 11.4 | 10.4 | 11 | 13.1 | 21.2 | 53.3 | 16.8 | 17.2 | -- | -- | -- | -- |
| 10 | Bitola, North Macedonia | 20.9 | 42.8 | 34.5 | 16.3 | 10.1 | 7.7 | 12.1 | 14.5 | 12.5 | 12.1 | 15.3 | 23.2 | 50.1 | 18.5 | 22 | 25.9 | -- | -- | -- |
| 11 | Ilinden, North Macedonia | 18.1 | 28.5 | 32.5 | 17.4 | 10.5 | 6.6 | 7.2 | 8.8 | 15.6 | 11.7 | 15.5 | 17.6 | 44.2 | 15.5 | 13.3 | -- | -- | -- | -- |
| 12 | Kočani, North Macedonia | 15.1 | 32.5 | 29 | 14 | 10 | 6.7 | 6 | 8.2 | 7.2 | 8.9 | 9.7 | 13.8 | 35.8 | 13.8 | 14.7 | -- | -- | -- | -- |
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