Pollution in the Vietnamese capital of Hanoi, home to almost 9 million people, reflects the environmental cost of the Southeast Asian nation’s explosive growth.

All but one of the world’s top 20 most polluted cities last year were in Asia, with the majority of these cities – 13 – in India, the world’s most populous country.

Shockingly, 12 of the world's 15 most polluted cities are in India. What's more, the country is also home to 63 of 100 of the most polluted places.

India was home to six of the nine most polluted global cities, IQAir said. One hundred and twenty-six countries, or 91.3% of the world, exceeded the WHO guideline, according to the report.

HONG KONG — Six out the world’s 10 most polluted cities are in India, while California has the worst air pollution in North America, a new report shows.. New Delhi was the most polluted ...

All 20 of the world’s most polluted cities last year exceeded WHO PM2.5 guidelines by over 10 times, the IQ Air report showed. Data gaps Vehicles drive amid high levels of air pollution in Hanoi ...

Six out the world’s 10 most polluted cities are in India, while California has the worst air pollution in North America, a new report shows.

All 20 of the world’s most polluted cities last year exceeded WHO PM2.5 guidelines by over 10 times, the IQ Air report showed. Data gaps ...

All but one of the world’s top 20 most polluted cities last year were in Asia, a new study shows. The majority of these cities – 13 – are in the world’s most populous country, India, where ...

All 20 of the world’s most polluted cities last year exceeded WHO PM2.5 guidelines by over 10 times, the IQ Air report showed. Data gaps ...

All 20 of the world’s most polluted cities last year exceeded WHO PM2.5 guidelines by over 10 times, the IQ Air report showed. Data gaps ...