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
| Rank | City | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
| 5073 |  West Chester USA | 8 | 6.9 | 10.5 | 8.2 | 11.2 | -- | -- | -- | -- |
| 5074 | Aiken USA | 8 | 7.7 | 11.5 | 12.4 | 14.8 | -- | -- | -- | -- |
| 5075 | Summit USA | 8 | -- | -- | -- | -- | -- | -- | -- | -- |
| 5076 | Taylors USA | 8 | 7.8 | 10.2 | -- | -- | -- | -- | -- | -- |
| 5077 | Chattanooga USA | 8 | 8.3 | 12.6 | 12 | 12.6 | 10.8 | 12.4 | 8.6 | 8.9 |
| 5078 | Alief USA | 8 | 11.8 | -- | -- | -- | -- | -- | -- | -- |
| 5079 | Baytown USA | 8 | 9 | 10.4 | 10.5 | 9.6 | -- | 9.2 | 9.4 | 10 |
| 5080 | Corsicana USA | 8 | 8.8 | 9.1 | 6.7 | 7.5 | 7.8 | 6.9 | 7.8 | 8.1 |
| 5081 | Kaufman USA | 8 | 7.7 | 7.9 | 7.4 | 7.5 | 8.1 | 8 | 7.5 | 8.1 |
| 5082 | Sherman USA | 8 | 8.3 | 8.9 | -- | -- | -- | -- | -- | -- |
| 5083 | Rutland USA | 8 | 6.8 | 7.8 | 7.2 | 7.9 | 7.6 | 7.6 | 7.6 | 7.1 |
| 5084 | Deer Park USA | 8 | 6.6 | 10.7 | 14.2 | 18.1 | -- | -- | -- | -- |
| 5085 | Washington USA | 8 | 6.9 | 10.8 | 10.4 | 12.2 | -- | -- | -- | -- |
| 5086 | Sturgeon Bay USA | 8 | 5.5 | 10.8 | 9.7 | -- | -- | -- | -- | -- |
| 5087 |  Knittelfeld Austria | 7.9 | 10.4 | 12.7 | 13 | 13.3 | 11.8 | -- | -- | -- |
| 5088 |  Saint-Nicolas Belgium | 7.9 | 6.8 | 6.8 | 7.8 | 8.6 | 7.2 | 10.1 | 10.8 | 9.4 |
| 5089 |  Santa Cruz de la Sierra Bolivia | 7.9 | 22.3 | -- | -- | -- | -- | -- | -- | -- |
| 5090 |  Porto Velho Brazil | 7.9 | 29.5 | 14.3 | 20.2 | 22.1 | -- | -- | -- | -- |
| 5091 |  Beaumont Canada | 7.9 | 9.5 | 17.7 | 12.5 | -- | -- | -- | -- | -- |
| 5092 | Cochrane Canada | 7.9 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 5093 | High River Canada | 7.9 | 9 | 12.2 | -- | -- | -- | -- | -- | -- |
| 5094 | Okotoks Canada | 7.9 | 8.4 | -- | -- | -- | -- | -- | -- | -- |
| 5095 | Pickardville Canada | 7.9 | 9.6 | -- | -- | -- | -- | -- | -- | -- |
| 5096 | Beausejour Canada | 7.9 | 7.1 | -- | -- | -- | -- | -- | -- | -- |
| 5097 | Newmarket Canada | 7.9 | 6.3 | 10.6 | 6.4 | 6.6 | 6.2 | 6.3 | 6.4 | 6.4 |
| 5098 |  Zoljan Croatia | 7.9 | 15.8 | 12.9 | 13.3 | -- | -- | -- | -- | -- |
| 5099 |  Křešín Czech Republic | 7.9 | 9.1 | 8 | -- | -- | -- | -- | -- | -- |
| 5100 |  Saint-Malo France | 7.9 | 8 | 9.1 | 12.6 | 9.9 | -- | -- | -- | -- |
| 5101 | Lirey France | 7.9 | 6.2 | 7.5 | -- | -- | -- | -- | -- | -- |
| 5102 | Sainte-Luce France | 7.9 | 8.5 | 8.4 | 7.3 | 10.3 | 9.4 | 8.9 | -- | -- |
| 5103 | Mamoudzou France | 7.9 | 8.4 | 13.5 | -- | -- | -- | -- | -- | -- |
| 5104 | Montoir-de-Bretagne France | 7.9 | 7.4 | 8.8 | 9.9 | -- | -- | -- | -- | -- |
| 5105 | Salon-de-Provence France | 7.9 | 7.9 | 9 | 11.4 | 9.6 | 8.7 | -- | -- | -- |
| 5106 |  Eggenstein-Leopoldshafen Germany | 7.9 | 7.5 | 7.7 | -- | -- | -- | -- | -- | -- |
| 5107 | Freiburg Germany | 7.9 | 7 | 7.2 | 9 | 7.5 | 8.1 | 9.4 | 10.6 | 10.5 |
| 5108 | Pforzheim Germany | 7.9 | 7.6 | 8.1 | 9.7 | 9 | 8.4 | 9.7 | 11 | 10.4 |
| 5109 | Altenburg Germany | 7.9 | 9 | 7.3 | 8.5 | 10.9 | 10.2 | -- | -- | -- |
| 5110 | Nordhausen Germany | 7.9 | 8.1 | 7.6 | 10.1 | 12.9 | -- | -- | -- | -- |
| 5111 |  Neapoli Greece | 7.9 | 7.3 | 14.7 | 17.5 | -- | -- | -- | -- | -- |
| 5112 |  Portlaoise Ireland | 7.9 | 7.6 | 6.8 | 7.8 | 7.2 | 7.9 | -- | -- | -- |
| 5113 |  Inuyama Japan | 7.9 | 6.6 | 7.6 | 7.7 | 7.6 | 8.7 | 11.1 | 12 | 10.8 |
| 5114 | Kaizu Japan | 7.9 | 7 | 7.6 | -- | -- | -- | -- | -- | -- |
| 5115 | Iki Japan | 7.9 | 7.5 | 8.5 | 7.7 | 10.1 | 11.6 | 12.6 | 14.2 | 13.5 |
| 5116 | Unzen Japan | 7.9 | 8.1 | 8.6 | 8.4 | 9 | 10.3 | 10.4 | -- | -- |
| 5117 | Sado Japan | 7.9 | 8.2 | 8.4 | 7.6 | 7.6 | 7.9 | 9.3 | 11.4 | 9.5 |
| 5118 | Sakurai Japan | 7.9 | 6.5 | 7.3 | -- | -- | -- | -- | -- | -- |
| 5119 | Yamagata Japan | 7.9 | 7.3 | 8.5 | 7.6 | 8.3 | 8.4 | 9.1 | 9.6 | 8.8 |
| 5120 | Nanbu Japan | 7.9 | 6.8 | 7.1 | 6.7 | 5.5 | -- | -- | -- | -- |
| 5121 |  Bahia de los Angeles Mexico | 7.9 | 4.7 | -- | -- | -- | -- | -- | -- | -- |
| 5122 |  Enschede Netherlands | 7.9 | 7.1 | 7.1 | 8.8 | 9.2 | 8.5 | 10 | 10.5 | 11.1 |
