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2017-2023
World's most polluted cities
Most polluted city ranking based on annual average PM2.5 concentration (μg/m³)
2023
World Air Quality Report
PM2.5 legend
0-5
Meets WHO guideline
5.1-10
Exceeds by 1 to 2 times
10.1-15
Exceeds by 2 to 3 times
15.1-25
Exceeds by 3 to 5 times
25.1-35
Exceeds by 5 to 7 times
35.1-50
Exceeds by 7 to 10 times
>50.1
Exceeds by over 10 times
Rank | City | 2023 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 51 |  Bloomington, USA | 13.8 | 7.2 | 7.9 | 11 | 18.6 | 17.3 | 17.8 | 19 | 13.3 | 20.5 | 10.3 | 8.8 | 13.1 | 14.4 | -- | -- | -- | -- | -- |
| 52 | Avondale Estates, USA | 13.8 | 10.5 | 11.5 | 12 | 10.4 | 15 | 21.5 | 18.8 | 17.4 | 17.2 | 9.1 | 10.6 | 8.3 | 12.1 | 14.9 | -- | -- | -- | -- |
| 53 | Smyrna, USA | 13.8 | 11.2 | 11.2 | 14.2 | 10.6 | 13.3 | 22.1 | 17.8 | 15.3 | 15.5 | 8.5 | 13.3 | 9.9 | 12.3 | -- | -- | -- | -- | -- |
| 54 | Duquesne, USA | 13.8 | 14.4 | 12.5 | 10.2 | 10.4 | 13.4 | 29 | 19 | 17.3 | 12 | 7.6 | 11 | 9.5 | 6.9 | -- | -- | -- | -- | -- |
| 55 | Kettle Falls, USA | 13.8 | 17.5 | 20.5 | 12.1 | 6.4 | 9 | 9.6 | 10.1 | 41.5 | 9.3 | 8.8 | 11.3 | 9 | 14.6 | 17.9 | 11.2 | 7.6 | -- | -- |
| 56 | Wheaton, USA | 13.7 | 16.4 | 8.5 | 4.9 | 10 | 11 | 31.5 | 16.9 | 17.2 | 12.5 | 7.4 | 9.4 | 7.6 | 9.5 | 13.4 | -- | 11.9 | -- | -- |
| 57 | Wilmette, USA | 13.7 | -- | -- | -- | 6.8 | 9.4 | 31.6 | 20.6 | 16.4 | 10.7 | 8.2 | 8.8 | 8.5 | 7.6 | -- | -- | -- | -- | -- |
| 58 | West Des Moines, USA | 13.7 | 21.3 | 9.6 | 15.6 | 8.6 | 12 | 23.9 | 16.3 | 15.1 | 15.4 | 5.8 | 4.7 | 8.1 | 9.9 | -- | -- | -- | -- | -- |
| 59 | Phoenix, USA | 13.7 | 9.5 | 10 | 8 | 4.7 | 5.6 | 4.6 | 9.4 | 62.9 | 17.7 | 7.2 | 11.6 | 12.3 | 11.6 | 19.1 | 14.8 | 9.7 | -- | -- |
| 60 | Emsworth, USA | 13.7 | 15 | 12.5 | 10.2 | 11.1 | 13.2 | 30 | 19 | 16.3 | 11.1 | 7.3 | 9.8 | 9.2 | 13.3 | 12.5 | -- | -- | -- | -- |
| 61 | Forest Hills, USA | 13.7 | 14.6 | 12.6 | 9.9 | 10 | 12.1 | 30 | 19.9 | 16.9 | 11.8 | 7.4 | 10.3 | 9.6 | 11.3 | 14.2 | -- | -- | -- | -- |
| 62 | New Berlin, USA | 13.7 | 17 | 11.1 | 11.7 | 10.5 | 10.5 | 34.5 | 16.6 | 16.5 | 11.9 | 6.8 | 8 | 8.5 | 11.4 | 12.5 | -- | -- | -- | -- |
| 63 | Tucker, USA | 13.6 | 10.6 | 11.8 | 14.4 | 11.8 | 13.3 | 21.4 | 17.9 | 16.1 | 16.2 | 9 | 11.5 | 9.5 | 12.5 | 14.3 | -- | -- | -- | -- |
| 64 | Fort Wayne, USA | 13.6 | 18.5 | 11.7 | 11.9 | 11.2 | 9.9 | 29.4 | 16.8 | 16.9 | 10.8 | 6.6 | 9.9 | 10.9 | 12.9 | 8.3 | -- | 9.6 | 9.1 | 7.7 |
| 65 | Dearborn, USA | 13.6 | 15.8 | 11.6 | 12.2 | 11.9 | 10.3 | 31.3 | 15.2 | 14 | 11 | 7.8 | 10.1 | 11.6 | 10.9 | 10 | 9.1 | 9.5 | 9.9 | 10 |
| 66 | North Saint Paul, USA | 13.6 | -- | 13.7 | 11.8 | 7.7 | 12.7 | 27.6 | 15 | 18.1 | 14 | 7.3 | 8.1 | 13.5 | -- | -- | -- | -- | -- | -- |
| 67 | Lancaster, USA | 13.6 | 11.6 | 12.1 | 9 | 9.9 | 10.3 | 31.7 | 15.3 | 14.9 | 11.7 | 9.1 | 12.6 | 15.6 | 9.5 | 12.9 | 8.8 | 9.4 | 8.2 | 11.4 |
| 68 | San Gabriel, USA | 13.5 | 8.9 | 7.9 | 8.4 | 18.3 | 15.2 | 14.9 | 20.7 | 15.2 | 19.4 | 10.7 | 8.8 | 12.7 | 13.4 | 16.3 | 17.3 | 14.2 | -- | -- |
| 69 | Washington Park, USA | 13.5 | 13.5 | 12.6 | 11.3 | 11.1 | 12.2 | 20.9 | 14.1 | 13 | 13.6 | 12.3 | 12.3 | 11.3 | 47.5 | -- | -- | -- | -- | -- |
| 70 | Michigan City, USA | 13.5 | 18.2 | 12.9 | 11.9 | 10.4 | 11.1 | 28 | 16.8 | 16.7 | 11.5 | 6.7 | 8.9 | 9.5 | 13 | -- | -- | -- | -- | -- |
| 71 | Sharpsburg, USA | 13.5 | 14.5 | 12.1 | 9.6 | 9.3 | 11.9 | 28.9 | 18.9 | 16.3 | 10.8 | 6.6 | 9.6 | -- | 9.8 | -- | -- | -- | -- | -- |
| 72 | La Porte, USA | 13.5 | 9.8 | 11.5 | 16.7 | 12.8 | 22.6 | 16 | 17.1 | 13 | 12.1 | 9.2 | 9.2 | 10.8 | 9.8 | 11.6 | -- | -- | -- | -- |
| 73 | Wapato, USA | 13.5 | 24 | 18 | 9.1 | 5 | 6.8 | 5.7 | 6.9 | 27.7 | 8 | 10.5 | 25 | 12.4 | 27.9 | 21 | -- | -- | -- | -- |
| 74 | Lewisville, USA | 13.4 | -- | 4.2 | 10.3 | 8.5 | 16.8 | 18.5 | 14.2 | 17.8 | 18.3 | 9.2 | 9.8 | -- | 12.8 | 13.5 | -- | -- | -- | -- |
| 75 | La Habra, USA | 13.4 | 8.6 | 8.6 | 7.9 | 15.5 | 12.9 | 13.6 | 20.4 | 16.5 | 19.2 | 13.4 | 9.8 | 13.9 | 13.3 | 18.2 | -- | -- | -- | -- |
| 76 | Ontario, USA | 13.4 | 7.8 | 8.1 | 8.5 | 15.2 | 12.8 | 15 | 20.1 | 14.3 | 18.4 | 13.6 | 10.6 | 15.2 | 15.1 | 18.8 | 17.6 | 16 | -- | -- |
| 77 | Orland Park, USA | 13.4 | 18.3 | 11.6 | 12.4 | 9.7 | 10.9 | 32.2 | 15.4 | 15.7 | 11 | 6.5 | 9.1 | 8.7 | 12.1 | -- | -- | -- | -- | -- |
| 78 | Streamwood, USA | 13.4 | 12.8 | 9.8 | 8 | 10.2 | 9.7 | 31.9 | 17.7 | 14.5 | 10.8 | 9 | 10.1 | 9.8 | 43.2 | -- | -- | -- | -- | -- |
| 79 | Union Hill, USA | 13.4 | 18.6 | 12.3 | 13 | 10.3 | 10.7 | 31.8 | 11.7 | 14.1 | 11.6 | 6.5 | 7.7 | 7.9 | 8.3 | 6.5 | -- | -- | -- | -- |
| 80 | Dillsboro, USA | 13.4 | -- | -- | 11.7 | 10.4 | 10.7 | 28.3 | 16.2 | 18.2 | 11.8 | 7.1 | 10.4 | 10.2 | -- | -- | -- | -- | -- | -- |
| 81 | Council Bluffs, USA | 13.4 | 19.3 | 8.5 | 13 | 10.8 | 14.7 | 19.6 | 15.5 | 15.6 | 20.3 | 6.3 | 7.4 | 8.8 | 9.5 | 13.7 | -- | -- | -- | -- |
| 82 | Scarsdale, USA | 13.4 | 13 | 15.2 | 8.5 | 10.4 | 9.4 | 33.5 | 20.5 | 13.4 | 15.7 | 9.6 | 8.7 | 9.7 | 12.6 | 17.1 | -- | -- | -- | -- |
| 83 | Williamsport, USA | 13.4 | 14 | 14.9 | 8.8 | 9.5 | 9.3 | 32.9 | 17.2 | 12.7 | 10.4 | 6.2 | 11.3 | 14.4 | 12.1 | -- | -- | -- | -- | -- |
| 84 | Bell, USA | 13.3 | 10.9 | 11 | 8.2 | 16.5 | 12.2 | 11.1 | 18.2 | 15 | 17 | 12 | 11.3 | 16 | 12.5 | 15.7 | 17.3 | -- | -- | -- |
| 85 | Diamond Bar, USA | 13.3 | 7.3 | 14.1 | 9 | 16.6 | 14.9 | 15.9 | 18.1 | 13 | 18.8 | 9.9 | 9.2 | 13.1 | 12.5 | 16.1 | 17.5 | 16 | -- | -- |
| 86 | Riverdale, USA | 13.3 | 29.2 | 14.6 | 6.7 | 6.6 | 5.5 | 6.9 | 8.4 | 12.4 | 12.5 | 11 | 18.2 | 27.1 | 15.5 | -- | -- | -- | -- | -- |
| 87 | Alpharetta, USA | 13.3 | 11.8 | 12.2 | 14.9 | 12 | 13.2 | 22.4 | 18.4 | 14.9 | 14.7 | 8.1 | 10.7 | 7.9 | 13.8 | -- | -- | -- | -- | -- |
| 88 | North Potomac, USA | 13.3 | -- | 13.8 | 15.4 | 11.7 | 11.7 | 22.6 | 19 | 15.8 | 12.4 | 7.8 | 8.9 | 9.2 | -- | -- | -- | -- | -- | -- |
| 89 | Parkville, USA | 13.3 | 12.4 | 13 | 9.8 | 10.3 | 11.3 | 29.4 | 18.4 | 15.1 | 11.2 | 7.8 | 10.7 | 11.1 | 11.7 | 3.8 | -- | -- | -- | -- |
| 90 | Temperance, USA | 13.3 | 13.8 | 12.3 | 12.6 | 11.6 | 10.2 | 29.2 | 15.1 | 15.4 | 4 | 3 | 4.2 | 3.2 | 10.5 | 12.1 | -- | -- | -- | -- |
| 91 | Minneapolis, USA | 13.3 | 20.9 | 12.6 | 10.8 | 7.2 | 12.1 | 26 | 14.1 | 16.7 | 13.2 | 6.5 | 7.7 | 12.3 | 8.8 | 11.4 | 8.4 | 8.8 | 7.8 | 7.7 |
| 92 | Newark, USA | 13.3 | 14.4 | 13.3 | 11.2 | 11.2 | 11.2 | 25.9 | 16.1 | 15 | 9.9 | 6.5 | 5.2 | 1.7 | 13.6 | 16 | -- | -- | -- | -- |
| 93 | West Newton, USA | 13.3 | 14.1 | 12.2 | 10.5 | 10.1 | 12.3 | 26.3 | 17.8 | 15.9 | 12.2 | 6.9 | 12 | 9.5 | 12.8 | 15.5 | -- | -- | -- | -- |
| 94 | Maple Bluff, USA | 13.3 | 17.2 | 12.7 | 12 | 10 | 11.3 | 36 | 14.4 | 16.6 | 10.1 | 6 | 6.9 | 8.1 | 19.1 | -- | -- | -- | -- | -- |
| 95 | East Point, USA | 13.2 | 10.2 | 11.3 | 15 | 11 | 13.6 | 21.5 | 18 | 15.5 | 15.3 | 8.7 | 10.4 | 8.6 | 11.8 | -- | -- | -- | -- | -- |
| 96 | Naperville, USA | 13.2 | 14.6 | 10.9 | 11.5 | 9.9 | 10.8 | 31.8 | 15.9 | 14.8 | 11.2 | 7.9 | 9.8 | 9 | 10.6 | 10.4 | 9.5 | 10.9 | 10.6 | -- |
| 97 | Dearborn Heights, USA | 13.2 | 13.9 | 9.2 | 11.7 | 11.3 | 11.5 | 31.5 | 14.1 | 15.4 | 11.4 | 6.1 | 7.3 | 9.5 | 10.5 | 11.8 | 11.2 | 11 | -- | -- |
| 98 | Wellsville, USA | 13.2 | 15.2 | 13 | 11.2 | 10 | 11.9 | 29 | 16.1 | 15.3 | 10.2 | 6.5 | 10.7 | 9 | 13.2 | -- | -- | -- | -- | -- |
| 99 | Peachtree Corners, USA | 13.1 | 10.7 | 12 | 14.3 | 10.9 | 12.6 | 20.1 | 16.6 | 20.8 | 14.5 | 8.6 | 12.8 | 10.4 | 10.6 | 14.4 | -- | -- | -- | -- |
| 100 | Peoria, USA | 13.1 | 16 | 11.3 | 13.2 | 9.7 | 11.3 | 28.3 | 21.3 | 15.4 | 11.2 | 8 | 9.1 | 8.2 | 11.2 | 11.2 | 8.2 | 8.6 | 9.6 | 9.9 |
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