Why is Hanoi the most polluted in the world?

Hùng Cường |

Hanoi is regularly on the list of the world's most polluted cities, with air quality indexes at warning levels for many days.

Hùng Cường
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Hanoi is the most polluted in the world, with some spots reaching extreme pollution

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On the morning of January 3, the IQAir application ranked Hanoi as the most polluted city in the world.

The two most polluted times of the day

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During the day, air pollution levels fluctuate, concentrated between 6-8am and 5-7pm.

Hanoi ranked 2nd in the world for pollution, many measuring points at hazardous levels

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Near noon on January 2, Hanoi's sky was still hazy, IQAir ranked Hanoi as the second most polluted city in the world.

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Hanoi is the most polluted in the world, with some spots reaching extreme pollution

Huy Hùng |

On the morning of January 3, the IQAir application ranked Hanoi as the most polluted city in the world.

The two most polluted times of the day

Huy Hùng |

During the day, air pollution levels fluctuate, concentrated between 6-8am and 5-7pm.

Hanoi ranked 2nd in the world for pollution, many measuring points at hazardous levels

Huy Hùng |

Near noon on January 2, Hanoi's sky was still hazy, IQAir ranked Hanoi as the second most polluted city in the world.