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start2017-2023
2023
World Air Quality Report
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 | Xonacatlan, Mexico | 29.2 | 33.9 | 32.7 | 30.6 | 31.7 | 32 | 24.7 | 24.4 | 25.2 | 26.4 | 26.6 | -- | -- | 28.5 | -- | -- | -- | -- | -- |
2 | Toluca de Lerdo, Mexico | 28.3 | 36 | 31.6 | 30.3 | 32.2 | 34.5 | 28.8 | 20.9 | 21.8 | 23.5 | 21.6 | -- | -- | -- | -- | -- | -- | -- | -- |
3 | Grimshaw, Canada | 27.5 | -- | -- | -- | -- | 53.1 | 27.4 | 38.9 | 34.7 | 55.6 | 9.5 | 11.1 | 5 | -- | -- | -- | -- | -- | -- |
4 | Guadalajara, Mexico | 25.8 | 34.1 | 35.3 | 36 | 34.6 | 36.8 | 35.5 | 20.5 | 16.3 | 17.7 | 13.8 | 13.1 | 16.9 | 26.7 | 25.4 | 24.5 | 18.9 | -- | -- |
5 | San Miguel Totocuitlapilco, Mexico | 25.7 | 30.9 | 25.2 | 28.1 | 32.7 | 33.9 | 24.6 | 17.6 | 17.4 | 20.7 | 16 | 13.6 | -- | -- | -- | -- | -- | -- | -- |
6 | Atotonilco de Tula, Mexico | 25.1 | 26.2 | 26.3 | 30.5 | 29 | 28.1 | 35.8 | 18.2 | 16.7 | 20.3 | 16.1 | -- | -- | 26.5 | 34.3 | -- | -- | -- | -- |
7 | Ajalpan, Mexico | 24.3 | 29.5 | 26.9 | 39 | 34.9 | 37.7 | 37.7 | 13.9 | 10.9 | 12.8 | 8.7 | 8.9 | 9.2 | 28.1 | -- | -- | -- | -- | -- |
8 | Celaya, Mexico | 24.2 | 27.9 | 32.1 | 34.7 | 35.4 | 34.7 | 23.2 | 15.5 | 15.4 | 14.8 | 14.6 | 18.8 | 23.2 | 19.2 | 19.3 | 18.6 | 20 | 20.1 | 22.2 |
9 | Fort Mckay, Canada | 23.8 | 9.1 | 5.7 | 8.7 | 6.2 | 43.4 | 33.9 | 50.5 | 44.7 | 62.6 | 7.7 | 6.4 | 5.2 | 6.3 | 5.6 | -- | -- | -- | -- |
10 | Cuidad Juarez, Mexico | 23 | 29.3 | 27.8 | 35.2 | 31.2 | 26 | 30.4 | 17.4 | 15.9 | 15.4 | 16.2 | 17.3 | 19.4 | -- | -- | -- | -- | -- | -- |
11 | Fort McMurray, Canada | 22.8 | 9.7 | 5.8 | 6.6 | 6.1 | 48.7 | 30.8 | 46.1 | 44.4 | 52.7 | 7.6 | 5.7 | 4.1 | 7.5 | 7 | 5.4 | 6.4 | -- | -- |
12 | Peace River, Canada | 22.4 | 18.9 | 4.8 | 5.3 | 3.8 | 61.3 | 31.9 | 33.8 | 28 | 45.2 | 7.9 | 8.1 | 5.8 | 7.1 | 6.3 | -- | -- | -- | -- |
13 | Fort Vermilion, Canada | 22.3 | 6.3 | 1.6 | 2 | 2.7 | 30 | 35 | 49.5 | 46.2 | 49.1 | 10.2 | 12.1 | 6.6 | -- | -- | -- | -- | -- | -- |
14 | Mexico City, Mexico | 22.3 | 32.2 | 25.9 | 27 | 28.5 | 30.5 | 21.8 | 15.7 | 14.6 | 18.2 | 13.5 | 17.4 | 22.1 | 22.1 | 21.7 | 18.8 | 20.5 | 19.7 | 20.4 |
15 | Cuidad de Mexico, Mexico | 22.1 | 29 | 25.1 | 26.1 | 28.3 | 30.6 | 22.4 | 18.2 | 15.4 | 16.3 | 14.9 | 15.8 | 22.7 | -- | -- | -- | -- | -- | -- |
16 | Morelia, Mexico | 21.6 | 36.3 | 37.2 | 25.3 | 38.5 | 38.8 | 23.7 | 15.9 | 15.2 | 18.7 | 12.9 | 13.4 | 14.8 | 19.9 | 21.9 | -- | 16.5 | -- | -- |
17 | Timberlea, Canada | 21.4 | 9.4 | 5 | 6.2 | 5.4 | 44.2 | 22.5 | 46.8 | 40.9 | 55.7 | 6 | 5.8 | 5.6 | -- | -- | -- | -- | -- | -- |
18 | Progreso, Mexico | 21.3 | 32.2 | 27 | 18.4 | 17.3 | 15.5 | 18.4 | 21.5 | 16.5 | 19.5 | 18 | 29.1 | 36.2 | 58 | 33.8 | -- | -- | -- | -- |
19 | Salamanca, Mexico | 21.3 | 28.9 | 24.3 | 24.5 | 23.8 | 29.7 | 25.2 | 17.6 | 13.3 | 16.6 | 16.2 | 17.8 | 13.8 | 20 | 19.6 | 18 | 20.9 | 20.9 | 25.1 |
20 | Yellowknife, Canada | 20.8 | 4.4 | 3.1 | 3.7 | 3.6 | 11.5 | 19.8 | 50.7 | 63 | 70.6 | 10.6 | 3.6 | 3.8 | 5.3 | 4.6 | 4.4 | 4.9 | -- | -- |
21 | Garcia, Mexico | 20.6 | 28.2 | 23.4 | 26.2 | 23.9 | 25.8 | 28.5 | 12.2 | 10.9 | 9.4 | 18 | 19.2 | 21.8 | 24.6 | 19.9 | 23.9 | 24.3 | -- | -- |
22 | General Escobedo, Mexico | 19.8 | 27.5 | 18 | 21.7 | 17.4 | 19.4 | 19.4 | 15.2 | 20.1 | 16 | 16.5 | 20 | 25.1 | 21.6 | 23.1 | 18.9 | 20.9 | -- | -- |
23 | La Union, El Salvador | 19.5 | 10.1 | 10.8 | 24 | 47.6 | 54.5 | 14.7 | 13.6 | 14.7 | 11.7 | 10.3 | 13.7 | 14.1 | 14.2 | 11.2 | -- | -- | -- | -- |
24 | Conklin, Canada | 19.4 | 8.2 | 3.2 | 4.7 | 5.2 | 49 | 27.9 | 36.3 | 33 | 47.5 | 7.1 | 5.5 | 4.3 | 6.3 | 6.5 | 4.6 | 5.7 | -- | -- |
25 | San Nicolas de los Garza, Mexico | 19.3 | 25.3 | 19.5 | 23.9 | 19.6 | 23.1 | 21.1 | 12.3 | 14 | 13.5 | 15.8 | 19.2 | 24.8 | 20.2 | 20.1 | 20.1 | 20.8 | -- | -- |
26 | Puebla, Mexico | 19.3 | 24.9 | 18.5 | 22.8 | 23.5 | 24.7 | 23.4 | 13 | 11.8 | 13.4 | 10.8 | -- | -- | 13 | 9.8 | 13 | -- | -- | -- |
27 | Coraopolis, USA | 19.3 | 7.9 | 6.5 | 6.8 | 5.5 | 8.8 | 23.4 | 18.2 | 22.2 | 42.1 | 54.2 | 11.8 | 8.6 | 7.2 | -- | -- | -- | -- | -- |
28 | Fort Chipewyan, Canada | 19.2 | 3.9 | 2.2 | 3.6 | 3.2 | 20.9 | 27.9 | 35.3 | 58.4 | 47.1 | -- | -- | 2.9 | 4.9 | 4.4 | 3.8 | 5.6 | 4.9 | 3.6 |
29 | Fort St John, Canada | 18.7 | 8.5 | 2.4 | 5.6 | 3.8 | 48.7 | 34.5 | 36.5 | 23 | 43.2 | 6 | 7.5 | 4 | 6.3 | 5.8 | 4.7 | -- | -- | -- |
30 | Guatemala City, Guatemala | 18.7 | 16.7 | 15.7 | 27.4 | 39.5 | 39 | 24 | 10 | 13.1 | 10.9 | 9.2 | 6.9 | 11.7 | 18.5 | 19.5 | -- | -- | -- | -- |
31 | Bonnyville, Canada | 18.6 | 17.2 | 5.6 | 10 | 6.6 | 24.7 | 26.1 | 29.5 | 23.5 | 24.4 | 8.3 | -- | -- | 8.5 | 9.1 | 4.9 | 5.5 | -- | -- |
32 | Patzcuaro, Mexico | 18.6 | 21.5 | 18 | 16.9 | 22.8 | 30.9 | 23.6 | 14.2 | 13.2 | 20.2 | 12.3 | 13.5 | 16 | 21.1 | 21.1 | 18 | 20.8 | -- | -- |
33 | Santa Catarina, Mexico | 18.6 | 20.7 | 20.2 | 22.8 | 21.1 | 22.6 | 22.9 | 15.4 | 13.9 | 14.3 | 14.6 | 15.6 | 19.3 | 21.5 | 21.9 | 20.7 | 22.6 | -- | -- |
34 | Santa Catarina Pinula, Guatemala | 18.5 | 9.8 | 11.6 | 23.8 | 43.9 | 51.1 | 24.1 | 10.7 | 12.5 | 10.1 | 9.1 | 8.2 | 9.5 | 9.5 | -- | -- | -- | -- | -- |
35 | Nezahualcoyotl, Mexico | 18.5 | 23.4 | 21 | 20.9 | 21.3 | 23.3 | 7 | 11.5 | 10.6 | 11.1 | -- | -- | 21.1 | -- | -- | -- | -- | -- | -- |
36 | San Borja, Mexico | 18.1 | 17.8 | 15.9 | 16 | 17.9 | 20.6 | -- | 19.6 | 18.2 | 18.9 | 20.1 | 17.5 | 16.7 | -- | -- | -- | -- | -- | -- |
37 | Magdalena Contreras, Mexico | 17.9 | 21.9 | 19 | 16.5 | 19.5 | 22.9 | 17.3 | 16.3 | 13.8 | 16.2 | 14.2 | 16.6 | 21.1 | 25.5 | -- | -- | -- | -- | -- |
38 | Guadalupe, Mexico | 17.9 | 18.7 | 19.3 | 21.6 | 21.7 | 15.7 | 19.7 | 14.3 | 14 | 11.9 | 14 | 19 | 25.7 | 17.2 | 22.1 | 19.1 | 17.1 | -- | -- |
39 | Beaumont, Canada | 17.7 | 23.9 | 8.2 | 14.5 | 8.7 | 36.1 | 20.7 | 28.2 | 20 | 29.3 | 5.5 | 8 | 5.7 | 12.5 | -- | -- | -- | -- | -- |
40 | Salmon Arm, Canada | 17.7 | 12.9 | 9.8 | 6.6 | 4 | 10.6 | 13.7 | 18 | 95 | 18.4 | 6.3 | 11.2 | 7.5 | 9.5 | 37.4 | -- | -- | -- | -- |
41 | Forest Park, USA | 17.6 | 13.6 | 14.5 | 18.6 | 13.7 | 16 | 24.1 | 19.9 | 20.2 | 18.7 | 20.8 | -- | -- | 15.5 | 16.8 | -- | -- | -- | -- |
42 | Wabasca-Desmarais, Canada | 17.5 | -- | -- | -- | 4.2 | 29.3 | 22.9 | 31.9 | 24.6 | 23.7 | 3.9 | 4.3 | 2.6 | 5.6 | 7.6 | -- | -- | -- | -- |
43 | Leon, Mexico | 17.3 | 22.8 | 20.3 | 22.2 | 21.2 | 26.1 | 17.7 | 13.1 | 10.1 | 12.1 | 11.4 | 14.9 | 14 | 17 | 16.6 | 19 | 20.9 | 20.8 | 27.3 |
44 | Silao, Mexico | 17.3 | 23.1 | 21.9 | 24.5 | 23.3 | 25.7 | 14.7 | 12 | 9.6 | 8.4 | 10.2 | 17.6 | 17.9 | 16.4 | 18.6 | 19 | -- | -- | -- |
45 | Antigua Guatemala, Guatemala | 17.1 | 17.6 | 15 | 23.5 | 31 | 31.7 | 22.1 | 10.4 | 13 | 15.1 | 9.2 | 6.9 | 8 | 20.3 | 22.4 | -- | -- | -- | -- |
46 | Monterrey, Mexico | 17.1 | 19.5 | 17.4 | 22.5 | 19.5 | 20.9 | 21.2 | 13.2 | 12 | 12.2 | 13.5 | 16.2 | 17.5 | 18.1 | 20.1 | 14.5 | 19.3 | 17.2 | 15.7 |
47 | Cave Junction, USA | 17.1 | 11 | 14.8 | 7.2 | 5.2 | 4.6 | 3 | 12.2 | 90.5 | 28.7 | 6.3 | 11.5 | 9.4 | 9.7 | 8.9 | 15.3 | 7.5 | 13.3 | 12 |
48 | Fort Saskatchewan, Canada | 16.8 | 17.9 | 6.2 | 10.7 | 7.2 | 35.9 | 21.9 | 31.4 | 19.3 | 28.3 | 7.1 | 9.2 | 7.8 | 7.4 | 8.2 | 5.8 | 7.5 | 11.6 | 7.9 |
49 | Redwater, Canada | 16.8 | 14.2 | 5.1 | 9.7 | 6.4 | 34 | 23.4 | 35.2 | 19.5 | 33.3 | 5.8 | 8 | 6.3 | 7.6 | 8.5 | 5.5 | 7.9 | -- | -- |
50 | Spruce Grove, Canada | 16.8 | 17.7 | 6 | 10 | 3.7 | 33.7 | 20.6 | 28.8 | 21.2 | 29.5 | 4 | 5.5 | 2.8 | 7.3 | 9.6 | 7.2 | 9.8 | -- | -- |
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