2017-2025
World's most polluted cities | IQAir
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7089 |  Grande Cache Canada | 6.1 | 4.9 | 12.6 | 4.8 | 12.3 | -- | -- | -- | -- |
| 7090 | Chetwynd Canada | 6.1 | 6.7 | 16.7 | 6.7 | 4.5 | -- | -- | -- | -- |
| 7091 | Crawford Bay Canada | 6.1 | 6.8 | 6.4 | -- | -- | -- | -- | -- | -- |
| 7092 | Kimberley Canada | 6.1 | 6.3 | 9.9 | 18.7 | -- | -- | -- | -- | -- |
| 7093 | Mica Creek Canada | 6.1 | 5.4 | 10.6 | -- | -- | -- | -- | -- | -- |
| 7094 | Rossland Canada | 6.1 | 6.9 | 10.9 | 8.8 | 27.8 | -- | -- | -- | -- |
| 7095 | Shawnigan Lake Canada | 6.1 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7096 | Summerland Canada | 6.1 | 5 | 15 | -- | -- | -- | -- | -- | -- |
| 7097 | Kingston Canada | 6.1 | 5.2 | 9.1 | 6.8 | 7.8 | 5.9 | 5.8 | 5.7 | 5.6 |
| 7098 | Outlook Canada | 6.1 | 7.1 | 11.6 | 5.9 | 8.5 | -- | -- | -- | -- |
| 7101 |  San Jose Costa Rica | 6.1 | 5.4 | 6.1 | 7.9 | 7.8 | 8.2 | 10.4 | -- | -- |
| 7102 |  Lauenburg Germany | 6.1 | 6.9 | 7 | 8.9 | 9.3 | 8.3 | 10.4 | -- | -- |
| 7103 |  Cesana Torinese Italy | 6.1 | 4.5 | 6.3 | 9.7 | 11 | -- | -- | -- | -- |
| 7104 |  Paraparaumu New Zealand | 6.1 | 4.7 | -- | -- | -- | -- | -- | -- | -- |
| 7105 |  Alcobaca Portugal | 6.1 | 6.1 | -- | -- | -- | -- | -- | -- | -- |
| 7107 |  As Pontes de Garcia Rodriguez Spain | 6.1 | 5.2 | 6.4 | 6.7 | 6.7 | -- | -- | -- | -- |
| 7108 | Naron Spain | 6.1 | 5.9 | 6.8 | 5.8 | 9 | -- | -- | -- | -- |
| 7109 | Villarejo de Salvanes Spain | 6.1 | 9.5 | 9.6 | 11 | 11.8 | 11.7 | 10.8 | 9.8 | 11.5 |
| 7110 |  Saignelegier Switzerland | 6.1 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7111 |  Bamford United Kingdom | 6.1 | 5.3 | -- | -- | -- | -- | -- | -- | -- |
| 7112 | Milton Keynes United Kingdom | 6.1 | 6 | 6.2 | 11.3 | 11.1 | -- | -- | -- | -- |
| 7113 | Weymouth United Kingdom | 6.1 | 4.8 | 8 | 9.3 | 10.9 | -- | -- | -- | -- |
| 7114 | Glasgow United Kingdom | 6.1 | 5.6 | 5.4 | 5.8 | 5.6 | 5.2 | 7.1 | 8.1 | 7.5 |
| 7115 |  Goodyear USA | 6.1 | 7.4 | -- | -- | -- | -- | -- | -- | -- |
| 7116 | Angels USA | 6.1 | 6.2 | -- | -- | -- | -- | -- | -- | -- |
| 7118 | Eureka USA | 6.1 | 3.9 | 5.7 | 5.9 | 7 | 10.9 | 6.7 | -- | -- |
| 7119 | Lake Arrowhead USA | 6.1 | 6.9 | 6.1 | 4.9 | 7.2 | 9.4 | 7.6 | -- | -- |
| 7120 | Mather USA | 6.1 | 6.2 | 7.9 | 10.2 | -- | -- | -- | -- | -- |
| 7121 | Mount Shasta USA | 6.1 | 6.3 | 7.9 | 8 | 17.5 | 14.4 | 9.1 | -- | -- |
| 7122 | San Juan Capistrano USA | 6.1 | 4.6 | 7.2 | 7 | 10.7 | 12.1 | 9.7 | -- | -- |
| 7123 | Tehachapi USA | 6.1 | 4.1 | 4.2 | 4.6 | 10.4 | 14.6 | 7.1 | -- | -- |
| 7124 | Valley Center USA | 6.1 | 6.2 | 7.2 | 7.2 | 7.5 | -- | -- | -- | -- |
| 7125 | Yermo USA | 6.1 | 6.9 | 4.4 | 3.3 | 6.4 | -- | 5 | -- | -- |
| 7126 | Broomfield USA | 6.1 | 6.3 | 6.4 | 5.2 | 11.2 | -- | -- | -- | -- |
| 7127 | Burlington USA | 6.1 | 7 | 8.1 | -- | -- | -- | -- | -- | -- |
| 7128 | Dove Creek USA | 6.1 | 4.6 | 4.6 | -- | -- | -- | -- | -- | -- |
| 7129 | Edgewater USA | 6.1 | 6.5 | 6.9 | 6 | 9.7 | -- | -- | -- | -- |
| 7130 | Fort Morgan USA | 6.1 | 5.8 | 5.8 | 4.6 | 10.3 | -- | -- | -- | -- |
| 7131 | Highlands Ranch USA | 6.1 | 6 | 6.1 | 4.2 | 9.9 | -- | -- | -- | -- |
| 7132 | Kremmling USA | 6.1 | 5.2 | 7.8 | 12 | 15.2 | -- | -- | -- | -- |
| 7133 | Welby USA | 6.1 | 7.9 | 12.4 | 15.5 | 15.5 | -- | -- | -- | -- |
| 7134 | Norwich USA | 6.1 | 6.1 | 9.8 | -- | -- | -- | -- | -- | -- |
| 7135 | Tolland USA | 6.1 | 5.5 | 7.8 | -- | -- | -- | -- | -- | -- |
| 7136 | Milton USA | 6.1 | 5.2 | -- | -- | -- | -- | -- | -- | -- |
| 7137 | Pace USA | 6.1 | 6.8 | 9.8 | 8.3 | -- | -- | -- | -- | -- |
| 7138 | Wilton Manors USA | 6.1 | 5.5 | -- | -- | -- | -- | -- | -- | -- |
| 7139 | Winchester USA | 6.1 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7140 | Brookline USA | 6.1 | 5.7 | 6.8 | 6.9 | 8.8 | -- | -- | -- | -- |
| 7141 | Greenfield USA | 6.1 | 5.8 | 9.1 | 7.3 | 8.9 | 8.4 | 7 | 5.9 | 5.6 |
| 7142 | Lakes of the North USA | 6.1 | -- | -- | -- | -- | -- | -- | -- | -- |
