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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
870 | Changhua, Taiwan | 24.5 | 28.1 | 32.1 | 32.6 | 35.3 | 27.6 | 15.9 | 12.1 | 13.4 | 21.1 | 28.8 | 27.7 | 19.7 | 16.1 | 18.2 | 15.8 | 19.3 | 21.8 | 22.8 |
1231 | Kaohsiung, Taiwan | 19.4 | 30.3 | 30.3 | 27.7 | 24.2 | 17.3 | 8 | 7.1 | 8.9 | 10.4 | 19.2 | 24 | 26.4 | 19.4 | 21.6 | 19.8 | 22.7 | 24.4 | 27.7 |
1-2 of 2