In a live ranking Saturday by IQAir, a Swiss air monitoring company, Hanoi ranked 13th on a list of the most polluted major cities. The fog hanging over Hanoi isn’t just pollution; it’s a ...

“I struggled a few weeks ago. The air was so bad, and the nature of my work means that I have to be outside,” Mã Thị Dung, 50, a peanut seller in Hanoi’s Old Town, said in an interview ...

This winter, Hanoi topped global air pollution charts, not once, but repeatedly, exposing the environmental cost of Vietnam ’s explosive growth, and briefly earning it the title of the world’s ...

Levels of hazardous small particles known as PM2.5 in the air in Hanoi were at 187 micrograms per cubic metre late on Monday, the highest among a list of most polluted international cities ...