Air pollution in Hanoi

Although not among the most polluted groups, Hanoi's AQI is still at an unhealthy level. Photo: Trang Anh

Although not among the most polluted groups, Hanoi's AQI is still at an unhealthy level

|

Hanoi - At 7:30 a.m., IQAir ranked Hanoi as the 12th most polluted city in the world.