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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3051 |  Lebach, Germany | 10.7 | 8.2 | 22.3 | 13 | 11.8 | 10.5 | 11.8 | 6.1 | 6.5 | 8 | 8.4 | 8.5 | 18.5 | 10.7 | 14.2 | -- | -- | -- | -- |
| 3052 |  Charvensod, Italy | 10.7 | 16.2 | 18.4 | 11.3 | 5.8 | 6.3 | 9.8 | 8.4 | 7.2 | 8.3 | 10.9 | 7.9 | 17.9 | -- | -- | -- | -- | -- | -- |
| 3053 | Fiesole, Italy | 10.7 | -- | -- | -- | 10 | 7.6 | 8.8 | 10.9 | 9.5 | 10.7 | 10.2 | 11.5 | 17.2 | -- | -- | -- | -- | -- | -- |
| 3054 |  Kanda, Japan | 10.7 | 12.8 | 10.7 | 15.5 | 13.8 | 11.4 | 11.1 | 8.2 | 7.8 | 7.9 | 8.3 | 10.3 | 10.5 | 11.5 | 10.5 | 13.3 | 13.5 | 14.3 | 14.9 |
| 3055 | Tenjin, Japan | 10.7 | 12.5 | 13.7 | 9.1 | 14.1 | 13.7 | 11.4 | 10 | 8.5 | 8.7 | 10.2 | 11.9 | 11.4 | -- | -- | -- | -- | -- | -- |
| 3056 | Amagasaki, Japan | 10.7 | 10.7 | 10.6 | 13.6 | 15.4 | 10.7 | 11.7 | 10.3 | 6.5 | 7.5 | 9.2 | 11.2 | 11 | 9.9 | 9.9 | 10.6 | 12.4 | 12.7 | 12.8 |
| 3057 | Kakogawa, Japan | 10.7 | 11 | 10.7 | 13.4 | 13.8 | 10.2 | 11.2 | 10.7 | 6.8 | 8.4 | 8.9 | 11.5 | 11.5 | 10.4 | 10.5 | 11.3 | 13.5 | 14.2 | 14.7 |
| 3058 | Ichikikushikino, Japan | 10.7 | 12.4 | 10.6 | 12.4 | 14.8 | 11.4 | 9.8 | 9 | 9.8 | 10.7 | 9.3 | 10.1 | 8.7 | 9.7 | 9.4 | 13.2 | 13.8 | 14.2 | 14.5 |
| 3059 | Kasugadekita, Japan | 10.7 | 11.4 | 12.7 | 13.6 | 14.2 | 9.9 | 11 | 10.1 | 6.7 | 7.7 | 8.7 | 11.6 | 11.6 | -- | -- | -- | -- | -- | -- |
| 3060 | Suita, Japan | 10.7 | 10 | 10 | 12.4 | 13.1 | 10.1 | 12.2 | 11.2 | 7.4 | 7.7 | -- | -- | 11.4 | 9.9 | 9 | 9.1 | 13.3 | 13.5 | 13.2 |
| 3061 | Ureshino, Japan | 10.7 | 13 | 10.6 | 13.1 | 14.2 | 11.9 | 11 | 9 | 8.2 | 9 | 8.4 | 10.9 | 9.5 | 10.3 | 10.6 | 11.7 | 13.6 | 13.8 | 14.9 |
| 3062 | Ome, Japan | 10.7 | 7.6 | 8.7 | 11 | 12.6 | 11.5 | 13.1 | 14.5 | 9.6 | 8.9 | -- | -- | 6.8 | 9.8 | 9.2 | 8.5 | 9.1 | 10.3 | 10.2 |
| 3063 | Wakayama, Japan | 10.7 | 10.7 | 10 | 12.5 | 14 | 10.7 | 12.3 | 11.2 | 7.7 | 8.8 | 10 | 10.6 | 10.2 | 10.4 | 10.1 | 10.3 | 11.3 | 12.5 | 13.3 |
| 3064 |  Limbang, Malaysia | 10.7 | 6.4 | 7.3 | 9.2 | 14 | 10.5 | 13.1 | 13.1 | 15.2 | 15 | 13 | 6.2 | 5.7 | 6.8 | 7.8 | 6.6 | 9.7 | -- | -- |
| 3065 | Sibu, Malaysia | 10.7 | 7.7 | 7.6 | 8.3 | 13.9 | 8.5 | 8.6 | 11.1 | 14.9 | 17.7 | 14.4 | 7.9 | 7.3 | 7.6 | 8.4 | 8.4 | 15.2 | -- | -- |
| 3066 |  Roosendaal, Netherlands | 10.7 | 13.9 | 18.6 | 10.5 | 14.7 | 13.1 | 11.5 | 5.5 | 6.3 | 12.4 | 7.1 | 5.4 | 8.9 | 14.8 | 17.4 | -- | -- | -- | -- |
| 3067 |  Suwalki, Poland | 10.7 | 14 | 11.9 | 12.8 | 9.9 | 8 | 9.1 | 8.6 | 10.9 | 12.4 | 7.8 | 11.8 | 11.7 | 11 | 13.7 | 11.1 | 12.6 | -- | -- |
| 3068 |  Huelva, Spain | 10.7 | 6.3 | 8.5 | 8.7 | 12.2 | 10.9 | 11.4 | 11.5 | 13.1 | 10.1 | 12.4 | 10.4 | 12.1 | -- | -- | -- | -- | -- | -- |
| 3069 |  Chino Hills, USA | 10.7 | 7.2 | 6.2 | 6.4 | 12.5 | 10.4 | 11.7 | 15.9 | 11.9 | 16.2 | 9.2 | 8.7 | 12.3 | 10.4 | 13.8 | 15.9 | 13.2 | -- | -- |
| 3070 | Hayfork, USA | 10.7 | 10.5 | 9 | 9.4 | 4.8 | 5.1 | 5.3 | 11 | 23.9 | 14.6 | 6.8 | 13.2 | 12.7 | 14.2 | 47.8 | -- | -- | -- | -- |
| 3071 | Maywood, USA | 10.7 | 8.4 | 7.8 | 7.1 | 12.8 | 10 | 9.2 | 14 | 11.4 | 13.6 | 10.2 | 9.5 | 13.7 | 11.6 | 15.7 | 17.5 | 16.5 | -- | -- |
| 3072 | Sierra Madre, USA | 10.7 | 3.7 | 3.9 | 5.8 | 15 | 14.2 | 14.5 | 18.4 | 12.2 | 18.5 | 8.2 | 6.3 | 7.7 | 9.7 | 11.1 | 14.7 | 13 | -- | -- |
| 3073 | Whittier, USA | 10.7 | 6.3 | 6.2 | 6.5 | 13.5 | 10.2 | 10.8 | 16.9 | 13.6 | 16.1 | 9.9 | 7.8 | 10.6 | 11.3 | 14.5 | 15.5 | 13.4 | -- | -- |
| 3074 | Ferdinand, USA | 10.7 | 9.9 | 7.7 | 7.6 | 6.7 | 8.7 | 28.4 | 15.2 | 12.5 | 9.5 | 6.3 | 7.9 | 7.9 | 8.6 | 11 | -- | -- | -- | -- |
| 3075 | Saylorville, USA | 10.7 | 10.4 | 7 | 8.1 | 8.8 | 11 | 20.2 | 15 | 11.6 | 12 | 7.1 | 8.6 | 7.9 | -- | -- | -- | -- | -- | -- |
| 3076 | Wichita, USA | 10.7 | 12.1 | 9 | 11.1 | 9.1 | 13.9 | 12.4 | 11.3 | 11.9 | 16.7 | 6 | 7.7 | 6.8 | 9.5 | 11.2 | 7.4 | 8.3 | 6.6 | 6.9 |
| 3077 | Gaithersburg, USA | 10.7 | 10.6 | 10.5 | 8.5 | 8.8 | 10.3 | 23.2 | 13.6 | 13.9 | 9.4 | 5.8 | 7.9 | 16.9 | 10 | 12.4 | -- | -- | -- | -- |
| 3078 | Silver Spring, USA | 10.7 | 11.5 | 11.4 | 7.3 | 6.1 | 8.3 | 22.6 | 15.6 | 13.3 | 9 | 6.5 | 8.8 | 8.9 | 11.5 | 12.4 | -- | -- | -- | -- |
| 3079 | Grand Haven, USA | 10.7 | 14 | 10.2 | 9.4 | 8.7 | 7.4 | 24.5 | 13.1 | 13.4 | 9 | 5.2 | 6.4 | 6 | 9.8 | 12.2 | -- | -- | -- | -- |
| 3080 | Port Huron, USA | 10.7 | 10.6 | 8.3 | 7.6 | 9 | 8 | 30.3 | 12.6 | 10.5 | 7.9 | 6.8 | 8.6 | 8.8 | 8.4 | 9.2 | 7.4 | 7.5 | 7.8 | 8.2 |
| 3081 | Walled Lake, USA | 10.7 | 10.7 | 7.5 | 10.6 | 8.2 | 8.6 | 26.1 | 12 | 13.7 | 9.1 | 5.6 | 7.6 | 7.7 | 7.2 | -- | -- | -- | -- | -- |
| 3082 | Saint Charles, USA | 10.7 | 10.7 | 7.7 | 10.3 | 8.1 | 11.6 | 22.9 | 10 | -- | -- | 7.7 | 8.3 | 7 | 8.2 | 11.7 | -- | -- | -- | -- |
| 3083 | Cary, USA | 10.7 | 9.1 | 9.4 | 8.8 | 8.4 | 9.4 | 21.3 | 15.9 | 13.8 | 10.7 | 6.7 | 9.1 | 7 | 9.8 | 11.8 | 9.5 | 12.2 | -- | -- |
| 3084 | 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 | -- | -- | -- | -- |
| 3085 | 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 |
| 3086 | Bend, USA | 10.7 | 2.3 | 2.8 | 2.7 | 2.1 | 5 | 4.5 | 19 | 55.5 | 15.3 | 5.8 | 7.3 | 5.3 | 7.4 | 11.3 | 13.6 | 5.8 | 8.4 | 10 |
| 3087 | Monessen, USA | 10.7 | 10.7 | 9.1 | 8 | 8.3 | 5.4 | 13.2 | 18 | 14.9 | 10.9 | 7.7 | 27.5 | -- | 11.7 | -- | -- | -- | -- | -- |
| 3088 | New Ellenton, USA | 10.7 | 8.8 | 10.9 | 3.2 | 7.7 | 10.6 | 17.8 | 14 | 12.4 | 11.8 | 6.4 | 9.3 | 6.3 | 10.7 | -- | -- | -- | -- | -- |
| 3089 | Knoxville, USA | 10.7 | 9.6 | 8.5 | 9.1 | 8.7 | 11.2 | 18.9 | 15.1 | 11.5 | 11.5 | 6.9 | 9.5 | 8.5 | 9.4 | 12.2 | 9.5 | 10.2 | 8.8 | 9.9 |
| 3090 | Fort Worth, USA | 10.7 | 9.1 | 9.9 | 10.8 | 9.4 | 16.6 | 15.1 | 10 | 11.9 | 13.6 | 5.7 | 9.5 | 7.1 | 9.6 | 10.4 | 9.3 | 8.4 | 10 | 8.1 |
| 3091 | Lewisville, USA | 10.7 | 9.7 | 10.5 | 11.4 | 8.4 | 17.1 | 15.3 | 9.9 | 12.2 | 14.2 | 5.8 | 8.6 | 6.3 | 10.8 | 11.9 | -- | -- | -- | -- |
| 3092 | Midlothian, USA | 10.7 | 9.6 | 10.4 | 11.5 | 8.6 | 18.2 | 16.5 | 9.4 | 11.8 | 14.2 | 5.4 | 7.5 | 5.6 | 10.1 | 11 | 9.3 | 9.2 | 9.3 | 9.2 |
| 3093 | Ashland, USA | 10.7 | 8.8 | 9 | 8 | 8.1 | 10.2 | 25 | 16.4 | 12.9 | 9.3 | 5 | 8.1 | 9 | 10.1 | 11.6 | -- | -- | -- | -- |
| 3094 | Blacksburg, USA | 10.7 | 6.7 | 8.5 | 8.4 | 8.8 | 12.5 | 27.3 | 14.9 | 11.2 | 9.5 | 6 | 9.2 | 5.3 | 8.8 | 10.5 | -- | -- | -- | -- |
| 3095 | Clifton, USA | 10.7 | 8.7 | 8.8 | 8.6 | 7.4 | 10 | 26.3 | 15.4 | 12.6 | 8.4 | 5.7 | 8.5 | 7.8 | 9.4 | -- | -- | -- | -- | -- |
| 3096 | Deer Park, USA | 10.7 | 8.2 | 6.5 | 5.2 | 4.5 | 7.7 | 7.5 | 7.6 | 39 | 8.4 | 8.3 | 14.1 | 8.5 | 14.2 | 18.1 | -- | -- | -- | -- |
| 3097 | Newman Lake, USA | 10.7 | 6.7 | 3 | 3.6 | 8 | 3.1 | 7.2 | 8.3 | 34.7 | 9.2 | 6.1 | 12.3 | 10.3 | 11.2 | -- | -- | -- | -- | -- |
| 3098 | Harpers Ferry, USA | 10.7 | 10.9 | 10.5 | 7.4 | 7.7 | 10.1 | 22.3 | 14.5 | 13.4 | 8.8 | 5.1 | 8.7 | 9.3 | 10.4 | 13.1 | 10.9 | 12.5 | -- | -- |
| 3099 |  Stockerau, Austria | 10.6 | 9.2 | 13.1 | 13.6 | 9.6 | 10.7 | 10.1 | 9.7 | 8.7 | 11.2 | 10.9 | 8.2 | 14.9 | 10.2 | 10.2 | -- | -- | -- | -- |
| 3100 | Lenzing, Austria | 10.6 | 8 | 10.2 | 9.4 | 7.7 | 10 | 9.3 | 5.2 | 5.8 | 14.7 | 14.6 | 13.6 | 19 | 9.2 | 9.1 | 9.7 | -- | -- | -- |
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