Hanoi, Vietnam's capital, is ranked as the world's most polluted city due to high PM2.5 levels from vehicle and construction emissions.

Vietnam's capital, Hanoi, is ranked as the most polluted city in the world with PM2.5 levels reaching 187 micrograms per cubic metre, according to AirVisual. High levels of vehicle emissions and construction-linked fine dust are causing the smog, damaging residents' health. Hanoi's 8 million registered vehicles contribute to 30% of air particulate pollution, and industry emissions make up another 30%.

March 04, 2024
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