The 10 Most Polluted Cities in The World

According to the report by World Health Organization (WHO), In 2010, some 223,000 people around the world died from lung cancer caused by exposure to air pollution. And more than half of those deaths are believed to have been in China and elsewhere in East Asia. WHO released a list of world’s 10 most polluted cities. The list includes four Iranian cities, three Pakistani, two Indian and one city of Mongolia and Botswana. The pollution is measured as the microgramme (mcg) concentration per cubic metre of air of particulate matter smaller than 10 micrometres (PM10)—about a seventh of the width of a human hair. The Middle East and North Africa is the world’s most polluted region with an annual mean level well over 130 mcg/m3, followed by Southeast Asia with a level near 100 mcg/m3. Here are the ten world’s worst cities for air pollution, according to the WHO.

10. Lahore, Pakistan

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