2017-2023
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2627 | New York City, USA | 11.6 | 10.7 | 11.8 | 8 | 9.4 | 8 | 24.8 | 17.4 | 12.3 | 10.9 | 8.3 | 7.9 | 10.3 | 9.9 | 10 | 6.5 | 7 | -- | -- |
2990 | Toronto, Canada | 10.8 | 10.6 | 9.1 | 7.7 | 8.9 | 7.5 | 24.3 | 15 | 13.5 | 10.2 | 6.7 | 7 | 8.8 | 8.5 | 9.3 | 7 | 7.4 | 7.8 | 7.5 |
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