IQAir’s World Air Quality Report 2022

On 14th March, 2023, Swiss air quality technology firm IQAir released the 5th Annual World Air Quality Report 2022.

  • The report measures air quality levels based on the concentration of lung-damaging airborne particles known as Particulate Matter 2.5 (PM2.5).
  • The report is based on PM2.5 data from 7,323 cities and 131 countries.

Key Findings

  • Least Polluted Countries: Six countries met the WHO PM2.5 guideline (annual average of 5 µg/m3 or less): Australia, Estonia, Finland, Grenada, Iceland and New Zealand.
  • Most Polluted Countries: The top five most polluted countries in 2022 were Chad (89.7 µg/m3), Iraq (80.1 µg/m3), Pakistan (70.9 µg/m3), Bahrain (66.6 µg/m3), ....
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