This post is by Selin Oğuz from Visual Capitalist
Subscribe to the Elements free mailing list for more like this
Ranked: The 20 Most Air-Polluted Cities on Earth
This was originally posted on Elements. Sign up to the free mailing list to get beautiful visualizations on real assets and resource megatrends each week.
According to the World Health Organization (WHO), almost the entire global population (99%) breathes air that exceeds WHO air quality limits.
In the above map, we use 2022 average PM2.5 concentrations from IQAir’s World Air Quality Report to visualize the most air-polluted major cities in the world.
World’s Air Pollution Hot Spots
As one of the standard air quality indicators used by the WHO, the PM2.5 concentration refers to the quantity of fine particulate matter with a diameter of 2.5 micrometers or less in a given volume of air.
Fine particulate matter that is this small can penetrate the lungs when inhaled and enter the bloodstream, affecting all major organs.
Based on annual average PM2.5 concentrations (μg/m³) in 2022, here are the most polluted cities in the world.
|Rank||City||2022 average PM2.5 concentration (μg/m³)|
|9||New Delhi, India||89.1|
|17||Greater Noida, India||(Read more...)|