Beijing will move 300 heavy polluters out of the capital before October to reduce smog and speed up industrial reform, according to authorities.

A total of 70.6 percent of the 74 Chinese cities monitored for air quality in April met the national air quality standards, the Ministry of Environmental Protection said on Friday.

The Ministry of Environmental Protection has for the first time defined what constitutes a smog polluted day.

Breathing in urban India is hard: of the world's top twenty cities with the worst air, 13 of them are found in India, according to a new analysis by the World Health Organization (WHO).

Bangladesh has been ranked fourth among 91 countries with worst urban air quality in the latest air pollution monitoring report of World Health Organisation (WHO).

World Health Organisation study finds Indian capital had dirtiest atmosphere of 1,600 cities around the world for PM2.5 particles

Thirteen of the dirtiest 20 cities were Indian, with New Delhi, Patna, Gwalior and Raipur in the top four spots.

The World Health Organization says air pollution in many of the world's cities is breaching its guidelines.