What was the most polluted city in the industrialized world in 2016, according to the World Health Organization?

  • Onitsha, Nigeria correct

    The World Health Organization studies the air quality in 3,000 cities. At the time of the 2016 measurements, Onitsha, a rapidly-growing city in Nigeria, recorded roughly 30 times more than the WHO's recommended levels of pollution particles. Peshawar in Pakistan came in at second place, followed closely by Zabol in Iran. Raipur, India, came in at No. 18 on the list of top 20 most polluted cities in the industrialized and/or developing world. Source: WHO.int.en; WeForum.org

  • Peshawar, Pakistan
  • Zabol, Iran
  • Raipur, India
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