Hanoi tops pollution rankings, seeks solutions to improve air quality

Hanoi is one of the most populous and rapidly developing cities in Vietnam, with over 8 million residents and millions of vehicles on the road daily. -- Photo: Vietnam News/ANN

HANOI (VIETNAM NEWS/ANN): Hanoi authorities are under significant pressure to improve air quality, particularly as the city rotates in and out of the top global ranking for air pollution levels, depending on routine measurements of the local environment.

In early January 2025, the air quality index (AQI) in Hanoi indicated severe air pollution, consistently reaching harmful levels, with peaks exceeding 400.