Tag: worst air-polluted cities
Hanoi ranks among world’s five most polluted cities
VOV.VN - Air quality in Hanoi deteriorated sharply on the morning of November 30, with multiple monitoring stations reporting air quality index (AQI) readings above 200, the city’s worst levels since the start of winter.
Hanoi ranked as world’s fourth most air-polluted city
VOV.VN - The Vietnamese capital ranked fourth among the top 100 worst air-polluted cities in the world on November 28, according to data released by Switzerland-based air quality monitor IQAir AirVisual.
