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WHO global air quality guidelines (AQG) - Update 2021

The World Health Organization (WHO) published updated air quality guidelines (AQG) on 22 September 2021.

WHO global air quality guidelines: particulate matter (‎PM2.5 and PM10)‎, ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide

Press release: New WHO Global Air Quality Guidelines aim to save millions of lives from air pollution

Full text download: WHO global air quality guidelines: particulate matter (‎PM2.5 and PM10)‎, ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide

Side-by-side comparison of the 2005 air quality guidelines (AQG) and the 2021 AQG levels.

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