The Most Polluted City in the World Isn’t Beijing or Delhi

Commuters travel through a traffic jam on their way to New Delhi from Gurgaon on May 3. (Chandan Khanna/AFP/Getty Images)

CLICK HERE - WHO Global Urban Ambient Air Pollution Database (update 2016)

washingtonpost.com - by Adam Taylor - May 13, 2016

What's the most polluted city in the world? Some might point to Beijing, the Chinese capital, and its now legendary smog problem. Others may point towards India, where Delhi's own air pollution problems are become similarly infamous. However, a new report from the World Health Organization suggests that these megacities are actually only the tip of the iceberg – and the actual city with the world's worst pollution is probably in Iran.

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who.int

This updated database contains results of urban outdoor air pollution monitoring from almost 3000 cities in 103 countries.  Air quality is represented by annual mean concentration of fine particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 microns).

The database aims to be representative for human exposure, and therefore primarily captures measurements from monitoring stations located in urban background, urban traffic, residential, commercial and mixed areas.

http://www.who.int/phe/en/

CLICK HERE - WHO - Air pollution levels rising in many of the world’s poorest cities