Hanoi: Second Most Air-Polluted City Worldwide
According to data from IQAir AirVisual, a Switzerland-based air quality monitor, the capital city was ranked as the second worst air-polluted city in the world on March 4.
According to data from IQAir AirVisual, a Switzerland-based air quality monitor, the capital city was ranked as the second worst air-polluted city in the world on March 4.
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