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 (concentration in μg/m3 categorized by WHO guideline)
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1557 |  Las Vegas USA | 7.4 | 8.6 | 4.8 | 6.8 | 11.8 | 11.4 | 10.4 | -- | -- |
| 1558 | Liberty USA | 7.4 | 6.8 | -- | -- | -- | -- | -- | -- | -- |
| 1559 | Pittsford USA | 7.4 | 6.3 | 12.4 | 7.5 | 10.6 | -- | -- | -- | -- |
| 1560 | Scarsdale USA | 7.4 | 7 | 13.4 | 12.6 | 17.1 | -- | -- | -- | -- |
| 1561 | West Seneca USA | 7.4 | 6.7 | 10.4 | -- | -- | -- | -- | -- | -- |
| 1562 | Green Level USA | 7.4 | 11.5 | -- | -- | -- | -- | -- | -- | -- |
| 1563 | Pleasant Hill USA | 7.4 | 7.9 | 9.3 | -- | -- | -- | -- | -- | -- |
| 1564 | Beavercreek USA | 7.4 | 6.8 | 12.4 | 9.2 | 13.1 | -- | -- | -- | -- |
| 1565 | Upper Arlington USA | 7.4 | 7.2 | 11.9 | 8.9 | -- | -- | -- | -- | -- |
| 1566 | Coalgate USA | 7.4 | 7.8 | -- | -- | -- | -- | -- | -- | -- |
| 1567 | Central Point USA | 7.4 | 7.1 | 11.3 | 10.4 | 20.7 | -- | -- | -- | -- |
| 1568 | Archbald USA | 7.4 | 6.8 | 9.2 | 7.3 | 10.3 | -- | -- | -- | -- |
| 1569 | Eddystone USA | 7.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1570 | Jamison USA | 7.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1571 | Montrose USA | 7.4 | 6.8 | 10 | -- | -- | -- | -- | -- | -- |
| 1572 | Natrona Heights USA | 7.4 | 6.6 | 10.3 | 9.9 | 12.4 | 10.8 | 12.5 | -- | -- |
| 1573 | Stormstown USA | 7.4 | 7 | 10.5 | -- | -- | -- | -- | -- | -- |
| 1574 | Claiborne USA | 7.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1575 | Crossville USA | 7.4 | 7.6 | 10.6 | -- | -- | -- | -- | -- | -- |
| 1576 | Hendersonville USA | 7.4 | 7.3 | 10.9 | 10.7 | 13.1 | 9.7 | 8.1 | 6.7 | 9 |
| 1577 | Boerne USA | 7.4 | 7.5 | 7.9 | 7.9 | 9.6 | 9 | 9.7 | -- | -- |
| 1578 | Dripping Springs USA | 7.4 | 8.7 | 10 | 8.4 | -- | -- | -- | -- | -- |
| 1579 | Huntington USA | 7.4 | 8.1 | 12 | 11.7 | 11.2 | 11.8 | -- | -- | -- |
| 1580 | Round Rock USA | 7.4 | 8.1 | 11 | 10.6 | 11.1 | -- | -- | -- | -- |
| 1581 | Taylorsville USA | 7.4 | 8.2 | 8.4 | 2.8 | -- | -- | -- | -- | -- |
| 1582 | Whiterocks USA | 7.4 | 7.8 | 9.5 | -- | -- | -- | -- | -- | -- |
| 1583 | Elliston USA | 7.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1584 | Frederick USA | 7.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1585 | Vienna USA | 7.4 | 7.1 | 11.4 | 10.7 | 12.8 | 11.4 | 10.7 | -- | -- |
| 1586 | Winchester USA | 7.4 | 7.2 | 10.6 | -- | -- | -- | -- | -- | -- |
| 1587 | Keller USA | 7.4 | 6.1 | -- | -- | -- | -- | -- | -- | -- |
| 1588 | Hambleton USA | 7.4 | -- | -- | -- | -- | -- | -- | -- | -- |
| 1589 | Niagara USA | 7.4 | 5.4 | 5.3 | -- | -- | -- | -- | -- | -- |
| 1590 | Oshkosh USA | 7.4 | 6.8 | 12.8 | 10.5 | 12.7 | -- | -- | -- | -- |
| 1591 | Prairie Farm USA | 7.4 | 6.4 | 11.7 | 8.5 | -- | -- | -- | -- | -- |
| 1592 | Viroqua USA | 7.4 | 6.4 | 10.1 | -- | -- | -- | -- | -- | -- |
| 1593 |  Airdrie Canada | 7.3 | 7.9 | 9.4 | 5.8 | 13.1 | -- | -- | -- | -- |
| 1594 | Camrose Canada | 7.3 | 8.7 | 15.3 | 7.9 | 10.6 | -- | -- | -- | -- |
| 1595 | Edson Canada | 7.3 | 7.5 | 9.1 | 5.4 | 5.6 | -- | -- | -- | -- |
| 1596 | Fort Macleod Canada | 7.3 | 6.5 | 9.5 | 5 | 13.5 | -- | -- | -- | -- |
| 1597 | Tomahawk Canada | 7.3 | 6.9 | 11.7 | 6.3 | 6.5 | 4.7 | 5.8 | 8.8 | 5.8 |
| 1598 | Cranbrook Canada | 7.3 | 7.3 | 9.3 | 8 | 12.9 | 9.7 | 8.9 | -- | -- |
| 1599 | Enderby Canada | 7.3 | 4.6 | 18.6 | -- | -- | -- | -- | -- | -- |
| 1600 | Smithers St Josephs Canada | 7.3 | 8 | 12.3 | 10.9 | 9.9 | -- | -- | -- | -- |
| 1601 | Grand Bend Canada | 7.3 | 6.1 | 10.5 | -- | -- | -- | -- | -- | -- |
| 1602 | Longueuil Canada | 7.3 | 6.9 | 9.5 | 1.6 | 8.4 | 9.9 | 9.2 | -- | -- |
| 1603 | Sainte-Adele Canada | 7.3 | 6.5 | -- | -- | -- | -- | -- | -- | -- |
| 1604 | Dixon USA | 7.3 | 4.7 | 7.9 | 8.6 | 11.6 | -- | -- | -- | -- |
| 1605 | Lakeview USA | 7.3 | 7.7 | 9 | 8.5 | 11.6 | 13.7 | 11.4 | -- | -- |
| 1606 | Mission Viejo USA | 7.3 | 7 | 8 | 7.7 | 11 | 11.2 | 9.4 | -- | -- |
