Home » Clean Air Blog » Air Pollution » Kolkata Air Quality Exceeds 14 Times WHO Limit in 2021 Kolkata Air Quality Exceeds 14 Times WHO Limit in 2021 2022/3/32022/2/23 作者 Dhariyash 哇!此内容没有中文版。点击这里快去看英文版! 你知道这些吗? Did Kolkata’s Air Quality Improve in 2020? Mumbai Air Quality Exceeds 8 Times WHO Limit in 2021 Did India Air Pollution Improve in 2021? 2020 India Air Pollution Report: Did Air Quality Improve?