The air we breathe is fundamental to life, yet the quality of that air varies drastically across the globe. Understanding the complexities of air quality standards (AQS) is crucial for policymakers, researchers, and concerned citizens alike. Thankfully, several invaluable tools exist to navigate this complex landscape.   

Two prominent resources stand out: the WHO’s Air Quality Standards tool and the STC34’s IEQ Guidelines platform.

The WHO’s Interactive Tool: A Global Overview

The World Health Organization (WHO) has developed a powerful interactive tool, accessible at https://worldhealthorg.shinyapps.io/Air_Quality_Standards_V2_1/, that allows users to explore ambient AQS from countries worldwide. This platform provides a user-friendly interface to compare standards for key pollutants such as particulate matter (PM2.5, PM10), ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2), and carbon monoxide (CO). Users can filter by country, pollutant, and averaging time, gaining a comprehensive understanding of the diverse regulatory approaches adopted globally.   

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