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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 |  Mandaluyong, Philippines | 19 | 16.5 | 18 | 18.9 | 26.7 | 23.1 | 22.7 | 18.9 | 11.9 | 28.1 | 18.7 | 12.8 | 11.9 | -- | -- | -- | -- | -- | -- |
| 2 | Batangas, Philippines | 18 | 8.9 | 14.8 | 16.9 | 28.8 | 26.2 | 25.4 | 17.8 | 15.6 | 29.1 | 16.4 | 9.9 | 8.6 | 17.2 | 9.5 | -- | 12.9 | -- | -- |
| 3 | Paranaque, Philippines | 17.8 | 16.9 | 15.3 | 14.1 | 23.3 | 21.8 | 23.2 | 17.9 | 12.6 | 28.1 | 16.1 | 13.1 | 10.9 | -- | -- | -- | -- | -- | -- |
| 4 | San Juan, Philippines | 17.3 | 12.4 | 13.6 | 12.9 | 20.7 | 18.7 | 21.2 | 17.7 | 12.8 | 30.2 | 19.4 | 14.3 | 13.1 | 9.1 | 14 | -- | -- | -- | -- |
| 5 | Taguig, Philippines | 16.9 | 14 | 14.2 | 13.6 | 21.5 | 17.8 | 18.5 | 15.3 | 9.6 | 27.2 | 19.5 | 15.8 | 15.6 | 24.4 | 29.6 | -- | -- | -- | -- |
| 6 | Olongapo, Philippines | 14.9 | 11.5 | 12.9 | 18.1 | 26.7 | 16.6 | 17.9 | 14 | 9.4 | 18.1 | 11.3 | 11.4 | 11.2 | 13.7 | 10.3 | -- | -- | -- | -- |
| 7 | Makati, Philippines | 14.8 | 15.9 | 15.9 | 15.7 | 22.8 | 15.1 | 19.7 | 18.1 | 13.6 | 17.7 | 11 | 9.8 | 9.4 | 14.7 | 8.9 | -- | -- | -- | -- |
| 8 | Rizal, Philippines | 14.7 | 13 | 12.8 | 10.9 | 17.7 | 15.6 | 15.1 | 14.4 | 11.1 | 24.4 | 14.3 | 15 | 11.5 | 15.8 | 19.4 | -- | -- | -- | -- |
| 9 | Davao City, Philippines | 14.7 | 12.1 | 11.8 | 11.5 | 13.6 | 13.3 | 14.7 | 15.4 | 19.4 | 18.2 | 19.4 | 14.6 | 12.6 | 13.9 | 11 | -- | -- | -- | -- |
| 10 | Silang, Philippines | 13.6 | 9 | 12.4 | 12.8 | 22.9 | 21.2 | 17.4 | 13.6 | 12.3 | 19.4 | 9.6 | 5.3 | 4.5 | 14.6 | 15.4 | -- | -- | -- | -- |
| 11 | Quezon City, Philippines | 10.8 | 9.5 | 9.6 | 9.9 | 14.3 | 9.1 | 9.5 | 9.8 | 7.1 | 19.2 | 10.3 | 4.4 | -- | 16.5 | 29 | -- | -- | -- | -- |
| 12 | Balanga, Philippines | 9.2 | 8.9 | 11.3 | 14.2 | 23.7 | 16.5 | 12.2 | 1.3 | -- | 1.1 | 1 | 1 | 1 | 8.7 | 5.3 | -- | 11.4 | 16.1 | 21.7 |
| 13 | Carmona, Philippines | 8.9 | -- | 11.3 | 7.3 | 11.4 | 19.9 | 8.5 | 6.7 | 6.2 | 12.1 | 7.8 | 5.3 | 4.5 | 4.5 | 8 | -- | 9.1 | 10.9 | 14.8 |
| 14 | Calamba, Philippines | 8.2 | 3.1 | 6.8 | 5.6 | 12.5 | 11.5 | 12.4 | 6.7 | 5.2 | 16.4 | 6.5 | 3.6 | 3 | 12.4 | 13.7 | 5.7 | 4 | 9.3 | -- |
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