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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3065 |  Waco USA | 10 | 10.9 | 10.6 | 8.7 | 6.8 | 7.5 | 6.8 | 6.9 | 6 |
| 3066 | Wapato USA | 10 | 10 | 13.5 | 27.9 | 21 | -- | -- | -- | -- |
| 3067 | Tomah USA | 10 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3068 |  Eisenstadt Austria | 9.9 | 12.7 | 12 | 11 | 10.4 | 10.1 | 11.3 | 14 | 12.8 |
| 3069 | Lienz Austria | 9.9 | 9.2 | -- | -- | -- | -- | -- | -- | -- |
| 3070 |  Stabroek Belgium | 9.9 | 9.5 | 10.1 | 11.8 | 12.9 | 11.9 | 11.7 | 13.6 | 13.6 |
| 3071 | Steenokkerzeel Belgium | 9.9 | 8.8 | -- | -- | -- | -- | -- | -- | -- |
| 3072 |  Bonnyville Canada | 9.9 | 12.7 | 18.6 | 8.5 | 9.1 | 4.9 | 5.5 | -- | -- |
| 3073 | Janvier Canada | 9.9 | 10.1 | 14.3 | -- | -- | -- | -- | -- | -- |
| 3074 |  Valence France | 9.9 | 9.8 | 10.2 | 11.5 | 10.7 | 10 | 10.9 | 11.2 | -- |
| 3075 | Kilstett France | 9.9 | 8.2 | 9.2 | -- | -- | -- | -- | -- | -- |
| 3076 | Nancy France | 9.9 | 8.5 | 8.4 | 11.4 | 10.5 | 9.5 | 9.4 | 10.9 | 10.8 |
| 3077 | Rognac France | 9.9 | 9 | 10.6 | 9.9 | 11.1 | 10.9 | -- | -- | -- |
| 3078 |  Schwabisch Hall Germany | 9.9 | 11.7 | -- | -- | -- | -- | -- | -- | -- |
| 3079 | Sontheim an der Brenz Germany | 9.9 | 8.5 | -- | -- | -- | -- | -- | -- | -- |
| 3080 | Nuremberg Germany | 9.9 | 9.3 | 9.5 | 16.3 | -- | -- | -- | -- | -- |
| 3081 | Senden Germany | 9.9 | -- | -- | -- | -- | -- | -- | -- | -- |
| 3082 | Hagen Germany | 9.9 | 9.9 | 10.2 | 13 | 12.6 | 14.1 | -- | -- | -- |
| 3083 | Wegberg Germany | 9.9 | 9.7 | -- | -- | -- | -- | -- | -- | -- |
| 3084 |  Rethymno Greece | 9.9 | 11.2 | -- | -- | -- | -- | -- | -- | -- |
| 3085 | Pyrgos Greece | 9.9 | 4.1 | 12.3 | 17.7 | 18.7 | -- | -- | -- | -- |
| 3086 |  Makassar Indonesia | 9.9 | 12.9 | 17.4 | 13.2 | 13.5 | 14.6 | -- | -- | -- |
| 3087 |  Komaki Japan | 9.9 | 8.8 | 9.8 | 9.3 | 8.2 | -- | -- | -- | -- |
| 3088 | Kamagaya Japan | 9.9 | 9 | 9.4 | 9.2 | 9.6 | 10.6 | 11.7 | 12.6 | 12.5 |
| 3089 | Nanatsugidai Japan | 9.9 | 8.8 | 9 | -- | -- | -- | -- | -- | -- |
| 3090 | Shiroi Japan | 9.9 | 8.9 | 9.9 | 9.3 | 9.5 | 9.5 | -- | -- | -- |
| 3091 | Chikugo Japan | 9.9 | 8.9 | -- | -- | -- | -- | -- | -- | -- |
| 3092 | Iizuka Japan | 9.9 | 9 | 10.8 | 11.9 | 10.9 | 11.8 | 12.6 | 13.5 | 13.3 |
| 3093 | Nogata Japan | 9.9 | 9.2 | 10.8 | 11.4 | 10.8 | 12.2 | 13.2 | 13.4 | 14.2 |
| 3094 | Ota Japan | 9.9 | 8.2 | 9.6 | 9 | 8.8 | 9.8 | 13 | 14.3 | 14.8 |
| 3095 | Toride Japan | 9.9 | 8.6 | 9.1 | 9 | 10.1 | -- | 11.8 | 12.4 | 11.8 |
| 3096 | Tarogawa Japan | 9.9 | 7.2 | -- | -- | -- | -- | -- | -- | -- |
| 3097 | Kameoka Japan | 9.9 | 7.9 | 8.8 | 8.6 | 9.2 | 10.1 | 12 | 11.9 | 12.3 |
| 3098 | Kizugawa Japan | 9.9 | 7.9 | 9.3 | 8.9 | 8.4 | 10.5 | 11.9 | 12.6 | 13 |
| 3099 | Kyoto Japan | 9.9 | 8.2 | 9.9 | 9.8 | 9.4 | 9.6 | 11 | 10.9 | 11.1 |
| 3100 | Tsu Japan | 9.9 | 8 | 9.1 | 8 | 8.4 | 8.1 | 8.8 | 9.8 | 12 |
| 3101 | Miemachi Ichiba Japan | 9.9 | 8 | -- | -- | -- | -- | -- | -- | -- |
| 3102 | Ekimae Japan | 9.9 | 8.2 | 9.4 | -- | -- | -- | -- | -- | -- |
| 3103 | Nishiki Japan | 9.9 | 8.8 | -- | -- | -- | -- | -- | -- | -- |
| 3104 | Hanno Japan | 9.9 | 10 | 10.9 | 10.2 | 10.1 | 10.8 | 11.9 | 13.2 | -- |
| 3105 | Hanyu Japan | 9.9 | 8.9 | 11.2 | 10.7 | 10.8 | 10.9 | 12.5 | 13.9 | -- |
| 3106 | Nagahama Japan | 9.9 | 8.2 | 9 | 8.6 | 8.4 | 8.7 | 10.8 | 11.2 | 11.2 |
| 3107 | Higashimurayama Japan | 9.9 | 8.5 | 8.9 | 8.5 | 8.7 | 10.6 | 12.1 | 13.5 | 13.3 |
| 3108 | Komae Japan | 9.9 | 8.9 | 8.9 | 8.6 | 8.4 | 9.1 | 10.9 | -- | -- |
| 3109 | Kunitachi Japan | 9.9 | 8.7 | 8.8 | 8.4 | 8.2 | 8.8 | 10.7 | 13.2 | 12.6 |
| 3110 | Mitaka Japan | 9.9 | 8.7 | 9.4 | 8.8 | 8.9 | 9.7 | 11.1 | 14 | 14.3 |
| 3111 |  Mombasa Kenya | 9.9 | 25.1 | 12.9 | -- | -- | -- | -- | -- | -- |
| 3112 |  Glogovac Kosovo | 9.9 | 10.5 | 6.8 | 4.3 | 11.4 | 12.5 | 15.6 | -- | -- |
| 3113 |  Breda Netherlands | 9.9 | 9.4 | 8.6 | 11.4 | 10.5 | 9.1 | 11.5 | 14.1 | 11.6 |
| 3114 |  Lørenskog Norway | 9.9 | 9.4 | 8.8 | -- | -- | -- | -- | -- | -- |
