Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Grove City, USA | 14.3 | 15.7 | 13.2 | 12.1 | 11.7 | 12 | 30.6 | 17.6 | 18.2 | 12.2 | 7.6 | 11.6 | 10.1 | 13 | 13.5 | -- | -- | -- | -- |
| 2 | Orrville, USA | 14.3 | 16.1 | 14.7 | 12.1 | 11.5 | 11.3 | 30.9 | 17.2 | 17.1 | 11.6 | 7.4 | 11.3 | 10.1 | 13.1 | 14.6 | -- | -- | -- | -- |
| 3 | Columbus, USA | 13.9 | 15.4 | 13.4 | 11.9 | 11.6 | 11.4 | 29.9 | 17.2 | 16.8 | 11.7 | 7.2 | 11.3 | 9.6 | 13.1 | 13.6 | 10.8 | 11.6 | 6.7 | 5.5 |
| 4 | 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 | -- | -- | -- | -- |
| 5 | 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 | -- | -- | -- | -- | -- |
| 6 | Fairborn, USA | 13 | 14.9 | 11.5 | 11.1 | 10.3 | 10.3 | 27.8 | 16.7 | 16.5 | 10.5 | 6.5 | 9.3 | 8.8 | 10.8 | -- | -- | -- | -- | -- |
| 7 | Seville, USA | 12.8 | 13.5 | 14.1 | 10.9 | 9.9 | 9.7 | 28 | 15.9 | 16 | 9.9 | 6.4 | 9.2 | 8.8 | 10.8 | 13.1 | 11.2 | 13.1 | -- | -- |
| 8 | Westerville, USA | 12.8 | 14.3 | 12 | 11.1 | 10 | 10 | 28 | 16.3 | 15.9 | 10.8 | 6.4 | 10.2 | 8.4 | 12.2 | 15.3 | -- | -- | -- | -- |
| 9 | Westlake, USA | 12.8 | 12.9 | 11 | 9.5 | 9.3 | 9.4 | 31.6 | 18.5 | 16.8 | 10.3 | 6.7 | 8.8 | 8.8 | 9.9 | 14.1 | -- | -- | -- | -- |
| 10 | Medina, USA | 12.7 | 15.1 | 13.3 | 10.8 | 9.8 | 9.8 | 28.9 | 16.1 | 15 | 9.6 | 6.1 | 9.1 | 9.6 | 12.9 | 9 | 6.4 | 8.6 | 7.9 | 8.3 |
| 11 | Mansfield, USA | 12.3 | 15.8 | 13.1 | 11.5 | 9.8 | 9.2 | 26.4 | 14.9 | 15 | 10.1 | 5.8 | 8.8 | 8.3 | 11.8 | 14.5 | -- | -- | -- | -- |
| 12 | Bexley, USA | 12.2 | 14.4 | 10.2 | 9.9 | 9 | 9.4 | 26.3 | 16.3 | 15.6 | 9.8 | 6 | 10.7 | 9.5 | 13.8 | -- | -- | -- | -- | -- |
| 13 | Broadview Heights, USA | 12.2 | 14.7 | 13.4 | 11.2 | 9.8 | 10.8 | 21.3 | 16.7 | 16.5 | 10 | 5.4 | 7.6 | 9 | 12.1 | 13.4 | -- | -- | -- | -- |
| 14 | Canton, USA | 12.1 | 11.2 | 11.6 | 9.4 | 9.5 | 10.6 | 32.5 | 15 | 13 | 8.1 | 6.3 | 9.9 | 8.8 | 10.7 | 12 | 10 | 11.3 | 10.3 | 9.8 |
| 15 | Middletown, USA | 12.1 | -- | 20.4 | 11.2 | 10.2 | 10 | 27.2 | 13.3 | 12.6 | 8.1 | 7 | 10.5 | 9.6 | -- | -- | -- | -- | -- | -- |
| 16 | Marietta, USA | 11.9 | 11.3 | 9.7 | 9.7 | 9.1 | 11.1 | 27.1 | 15.9 | 15.3 | 11.1 | 6.1 | 9.5 | 7.5 | 11.7 | -- | -- | -- | -- | -- |
| 17 | Upper Arlington, USA | 11.9 | 11.9 | 9.9 | 9.2 | 8.5 | 9.2 | 26.9 | 15.1 | 16.3 | 10.5 | 6.6 | 10.6 | 9.4 | 8.9 | -- | -- | -- | -- | -- |
| 18 | Cleveland, USA | 11.8 | 11.7 | 10.9 | 9.6 | 10 | 10.3 | 29.5 | 14.2 | 12.5 | 8.2 | 6.7 | 8.8 | 9.3 | 10 | 13.2 | 12.4 | 13.3 | 9.5 | 8.9 |
| 19 | Elmwood Place, USA | 11.8 | 11.1 | 10.9 | 9.9 | 10.1 | 9.4 | 26.2 | 14.1 | 13 | 8.4 | 7.1 | 11 | 10.1 | -- | -- | -- | -- | -- | -- |
| 20 | Toledo, USA | 11.8 | 13.1 | 9.8 | 8.2 | 9.6 | 8.6 | 26.6 | 15.2 | 15.5 | 10.8 | 5.6 | 8.2 | 10.3 | 12.2 | 9.3 | 7.7 | 7.5 | 7.9 | 8 |
| 21 | Whitehouse, USA | 11.6 | -- | 8.7 | 10.4 | 8.2 | 8.7 | 29.4 | 14.2 | 16.3 | 9.5 | 5.3 | 4.9 | 4.9 | 8.4 | 11.3 | -- | -- | -- | -- |
| 22 | Ashtabula, USA | 11.5 | 13.1 | 11.6 | 9.1 | 10.3 | 10 | 26.7 | 15.1 | 13.7 | 9.6 | 5.7 | 6.6 | 7 | 10.2 | 11.1 | -- | -- | -- | -- |
| 23 | Barberton, USA | 11.4 | 11.6 | 11.6 | 9.1 | 9.2 | 10.1 | 24.7 | 15.6 | 15 | 8.6 | 6.1 | 8.2 | 7.2 | 12.2 | -- | -- | -- | -- | -- |
| 24 | Harrison, USA | 11.3 | 1.5 | 4.5 | 1.6 | 1.6 | 1.6 | 29.2 | 16 | 17 | 10.7 | 6.4 | 9.4 | 8.9 | 10.9 | 13.4 | -- | -- | -- | -- |
| 25 | Montrose-Ghent, USA | 11.3 | 12.4 | 11.7 | 9.1 | 8.3 | 9.3 | 25.8 | 14.9 | 14.5 | 9 | 5.5 | 7.7 | 7.1 | 10.3 | 15.5 | -- | -- | -- | -- |
| 26 | Cincinnati, USA | 11.1 | 10.2 | 8.2 | 8.2 | 8.1 | 8.5 | 26.1 | 14.8 | 16.2 | 9.8 | 6.2 | 9.2 | 8.3 | 9.9 | 11.7 | 10.1 | 11.2 | 10.4 | 9.7 |
| 27 | Dayton, USA | 11 | 10.1 | 9.7 | 9 | 9.1 | 8.5 | 26.8 | 13.7 | 12.1 | 7.7 | 6.7 | 9.5 | 8.9 | 9.6 | 10.6 | 10.4 | 9 | 8.2 | 7.1 |
| 28 | Cleves, USA | 10.9 | 11.7 | 8.7 | 8.2 | 8.4 | 8.4 | 23 | 12.7 | 14.3 | 9.8 | 6.9 | 10.1 | 9 | 13.4 | 8.6 | 7.6 | 8 | 8.6 | 9.7 |
| 29 | Springfield, USA | 10.9 | 9.3 | 9.1 | 8.3 | 9 | 8.8 | 26.2 | 14.2 | 12.1 | 8 | 6.9 | 9.9 | 8.7 | 7.2 | 10.6 | 7.7 | 10.6 | 10.3 | 8.7 |
| 30 | Barnesville, USA | 10.7 | 10.4 | 9.4 | 10.1 | 6.6 | 9 | 24.8 | 14.8 | 13.7 | 9.4 | 5.3 | 8.1 | 7.3 | 9.2 | 11.9 | -- | -- | -- | -- |
| 31 | Steubenville, USA | 10.7 | 11.8 | 10.9 | 8.8 | 8.6 | 9.3 | 27.7 | 11.6 | 10.4 | 6.8 | 6.1 | 8.6 | 7.8 | 8.6 | 12 | 6.6 | 11.1 | 12.4 | 12.3 |
| 32 | Akron, USA | 10.6 | 7.5 | 8.3 | 6.8 | 7.2 | 8.2 | 25.6 | 14.6 | 15.1 | 10 | 6.2 | 9.3 | 8.7 | 8.8 | 11.5 | 10.6 | 11.3 | 9 | 8.8 |
| 33 | Chillicothe, USA | 10.6 | 10.7 | 10.5 | 9.4 | 8.8 | 9 | 22.7 | 12.6 | 13 | 8.9 | 5.3 | 8.3 | 7.1 | 10.5 | 12.9 | -- | -- | -- | -- |
| 34 | Wadsworth, USA | 10.6 | 12 | 12 | 8.5 | 8.4 | 8.1 | 24.3 | 13.5 | 13.2 | 8.4 | 5.3 | 7.6 | 7.2 | 9.7 | 12.6 | 11.2 | 13 | -- | -- |
| 35 | Warren, USA | 10.6 | 6.8 | 7.1 | 8.6 | 9 | 10.2 | 28.7 | 13.8 | 12.1 | 8.1 | 6.4 | 8.7 | 8 | 5 | 8.6 | 6.1 | -- | -- | -- |
| 36 | Chagrin Falls, USA | 10.5 | -- | -- | -- | 5.7 | 6.3 | 27.2 | 15.3 | 13.9 | 6.9 | 5.4 | 6 | 6.6 | -- | -- | -- | -- | -- | -- |
| 37 | Youngstown, USA | 10.5 | 9.5 | 9.7 | 8.3 | 8.7 | 9.4 | 29.7 | 12.6 | 11.5 | 7.2 | 6.5 | 8.4 | 7.8 | -- | -- | -- | -- | -- | -- |
| 38 | Lewis Center, USA | 10.4 | 10 | 8.7 | 8.4 | 8.3 | 8.4 | 23.7 | 14.2 | 13.3 | 8.7 | 5 | 7.7 | 6.3 | 9.6 | 13 | 11 | 12.6 | -- | -- |
| 39 | Warrensville Heights, USA | 10.1 | 11 | 9.9 | 9.2 | 8.5 | 7.6 | 26.4 | 11.7 | 10.5 | 6.1 | 5.3 | 7.2 | 7.9 | -- | -- | -- | -- | -- | -- |
| 40 | New Paris, USA | 10 | 9.6 | 8.6 | 8.4 | 8.6 | 7.7 | 27.3 | 12.2 | 11 | 6.3 | 6 | 7.5 | 5.8 | 7.3 | 9.4 | 7.9 | 8.9 | 9.3 | 8 |
| 41 | Ironton, USA | 9.4 | 8.3 | 8.4 | 7.9 | 8.6 | 8.6 | 21.6 | 10.1 | 9.5 | 6.8 | 6.2 | 9.3 | 8 | 7.3 | 9.4 | 7.7 | 7.1 | 6.9 | 6.5 |
| 42 | Athens, USA | 9.3 | 8.7 | 7.7 | 7.9 | 7.5 | 7.9 | 22.3 | 12 | 12.1 | 7.9 | 5.1 | 8 | 6.1 | 8.9 | 11.6 | -- | -- | -- | -- |
| 43 | Lebanon, USA | 8.9 | 8.1 | 7 | 6.7 | 7.1 | 7.8 | 21.5 | 12.5 | 11.5 | 6.7 | 4.7 | 6.7 | 6 | 8.8 | 10.1 | 7.6 | 9.1 | 8.5 | 9.1 |
| 44 | Chardon, USA | 8.3 | 4.1 | 5.1 | 4.3 | 4.1 | 4.5 | 15.2 | 10.8 | 12.9 | 9.7 | 5.8 | 8.8 | 10.3 | 5 | 11.5 | 9.4 | 11 | -- | -- |
| 45 | Lima, USA | 8.2 | 7.3 | 6.6 | 6.3 | 6.3 | 6 | 22.5 | 10.1 | 8.5 | 4.2 | 5 | 7.4 | 7.8 | 6.2 | 11.4 | 5.3 | 7.2 | 5.6 | 4.3 |
| 46 | Painesville, USA | 7.6 | 5.2 | 4.8 | 5.9 | 6.9 | 7.6 | 18.5 | 9.8 | 6.9 | 7 | 6.1 | 6.3 | 6 | 6.1 | 7.8 | 6.6 | 6.8 | 7.2 | 7.4 |
| 47 | New Albany, USA | 7.2 | 5.3 | 5.3 | 5.6 | 5.9 | 5.1 | 21 | 10.2 | 7.6 | 5 | 4 | 5.6 | 5.3 | 6.2 | 7.8 | 7 | 7.9 | 7.9 | 7 |
| 48 | Batavia, USA | 6.5 | 4.8 | 5 | 4.9 | 5.2 | 5.6 | 18.4 | 8.9 | 7.8 | 3.8 | 3.1 | 5.4 | 4.8 | 9.2 | 6.6 | 6.1 | 7.2 | 7.1 | 8.9 |
| 49 | Shadyside, USA | 6.3 | 1.5 | 4.8 | 1.6 | 1.7 | 1.5 | 1.5 | 9.6 | 8.8 | 6.1 | 4.9 | 7.6 | 6.6 | 1.6 | 11.4 | -- | -- | -- | -- |
1-49 of 49
1
Jump to page:
Stay Informed. Download #1 air quality app
Rated 4.8Air pollution forecast, pollution alerts and much more to help you plan your days and keep protected against air pollution
AQI US, Metric