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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7957 |  Oberried Germany | 5.2 | 4.2 | 4.6 | 5.8 | 4.5 | -- | -- | -- | -- |
| 7958 |  Lamani Honduras | 5.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7959 |  Guerrero Negro Mexico | 5.2 | 4.1 | -- | -- | -- | -- | -- | -- | -- |
| 7960 |  Mo i Rana Norway | 5.2 | 6.7 | 7.4 | 6.5 | 7.4 | 5.3 | 7.5 | -- | -- |
| 7961 |  Viver Spain | 5.2 | 4.6 | 6.1 | 6.4 | 6.8 | 6.3 | 5.7 | 6.3 | 7.4 |
| 7962 |  Stockholm Sweden | 5.2 | 5.3 | 5.4 | 6.8 | 6 | 5.1 | 6.1 | 6.6 | 4.4 |
| 7963 |  Lancaster United Kingdom | 5.2 | 5.2 | 7.3 | 8.5 | 8.7 | -- | -- | -- | -- |
| 7964 | Princes Risborough United Kingdom | 5.2 | 5.8 | 5.2 | 13.9 | 11.2 | -- | -- | -- | -- |
| 7965 | Inverness United Kingdom | 5.2 | 4.4 | 4.5 | 4.6 | 4.9 | 4.6 | 5.8 | -- | -- |
| 7966 | Aberystwyth United Kingdom | 5.2 | 4.3 | 4.2 | -- | -- | -- | -- | -- | -- |
| 7967 |  Buckeye USA | 5.2 | 4.1 | 7.3 | 10.2 | 8.3 | 12.9 | -- | -- | -- |
| 7968 | Fountain Hills USA | 5.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7969 | Peoria USA | 5.2 | 7 | 3.4 | 2.7 | 4.4 | -- | -- | -- | -- |
| 7970 | Peridot USA | 5.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 7971 | Scottsdale USA | 5.2 | 5.3 | 3.7 | 3.3 | 5.9 | 10.8 | -- | -- | -- |
| 7972 | Winslow USA | 5.2 | 5.7 | 5.2 | -- | -- | -- | -- | -- | -- |
| 7974 | Aromas USA | 5.2 | 4.6 | 6.3 | 7.6 | 8.1 | -- | -- | -- | -- |
| 7975 | Boulder Creek USA | 5.2 | 4.4 | 6.1 | 6.5 | 7 | -- | 6.2 | 11.8 | 10.6 |
| 7976 | Cold Springs USA | 5.2 | 4.9 | -- | -- | -- | -- | -- | -- | -- |
| 7977 | Danville USA | 5.2 | 4.9 | 6 | 7.1 | 8.3 | 11.8 | 6.4 | -- | -- |
| 7978 | Deer Park USA | 5.2 | 4.3 | -- | -- | -- | -- | -- | -- | -- |
| 7979 | Dobbins USA | 5.2 | 4.9 | 6.1 | 7.3 | -- | -- | -- | -- | -- |
| 7980 | Fairview USA | 5.2 | 4.4 | 5.8 | 8.8 | 8.9 | -- | -- | -- | -- |
| 7981 | Fieldbrook USA | 5.2 | 4.6 | -- | -- | -- | -- | -- | -- | -- |
| 7982 | Folsom USA | 5.2 | 5 | 6.2 | 7.4 | 11.7 | 14.5 | 6.5 | 10.2 | 7.9 |
| 7983 | Forest Meadows USA | 5.2 | 5.4 | -- | -- | -- | -- | -- | -- | -- |
| 7984 | Freedom USA | 5.2 | 4.9 | 7.8 | -- | -- | -- | -- | -- | -- |
| 7985 | Guerneville USA | 5.2 | 5.1 | 7.3 | 8.6 | 9.6 | 15.2 | 9.5 | -- | -- |
| 7986 | Guinda USA | 5.2 | 5.1 | 6.3 | 5.8 | -- | -- | -- | -- | -- |
| 7987 | Hayward USA | 5.2 | 5 | 6.3 | 8.1 | 8.3 | 11.8 | 6.8 | -- | -- |
| 7988 | King City USA | 5.2 | 5.5 | 4.6 | 5.6 | 6.6 | -- | -- | -- | -- |
| 7989 | Lake San Marcos USA | 5.2 | 5.4 | 7.9 | 10.4 | -- | -- | -- | -- | -- |
| 7990 | Lee Vining USA | 5.2 | 2.9 | 3.5 | 3.8 | 8.9 | 14 | 3.6 | -- | -- |
| 7991 | North Fair Oaks USA | 5.2 | 4.9 | 7 | 8.2 | 8.5 | -- | -- | -- | -- |
| 7992 | Pine Mountain Lake USA | 5.2 | 5.6 | -- | -- | -- | -- | -- | -- | -- |
| 7993 | San Martin USA | 5.2 | 4.8 | 6.4 | 8.5 | 8.9 | -- | -- | -- | -- |
| 7994 | Toro Canyon USA | 5.2 | 5.2 | -- | -- | -- | -- | -- | -- | -- |
| 7995 | Vallejo USA | 5.2 | 5.1 | 6.5 | 8.4 | 8.8 | 11.5 | 7.7 | 13 | 11.9 |
| 7996 | Verdi USA | 5.2 | 5.4 | 5.8 | 8 | -- | -- | -- | -- | -- |
| 7997 | Walnut Creek USA | 5.2 | 4.9 | 6.1 | 7.5 | 8.8 | 12.2 | 6.6 | -- | -- |
| 7998 | Buena Vista USA | 5.2 | 3.4 | 3 | 2.6 | 7.9 | 6.9 | -- | -- | -- |
| 7999 | Gleneagle USA | 5.2 | 5.1 | 5.3 | 4 | 12.7 | -- | -- | -- | -- |
| 8000 | Lake USA | 5.2 | -- | -- | -- | -- | -- | -- | -- | -- |
| 8001 | Mesa USA | 5.2 | 5.4 | -- | -- | -- | -- | -- | -- | -- |
| 8002 | Montrose USA | 5.2 | 4.8 | 4.3 | 3.9 | 7.3 | -- | -- | -- | -- |
| 8003 | Monument USA | 5.2 | 4.6 | 5 | 3.1 | 5.8 | -- | -- | -- | -- |
| 8004 | Palisade USA | 5.2 | 4.8 | 3 | 2.9 | 7.2 | 8.2 | 3.3 | -- | -- |
| 8005 | Gainesville USA | 5.2 | 6.4 | 6.7 | 7 | 8 | 7.5 | 7.7 | -- | -- |
| 8006 | Melbourne USA | 5.2 | 5.6 | 7.2 | 7.5 | 8.2 | 8 | 7 | 7.2 | 8.1 |
| 8007 | North Port USA | 5.2 | 4.4 | -- | -- | -- | -- | -- | -- | -- |
