Air pollution | Singapore
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based on annual average PM2.5 concentration
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Definition
The 2023 World Air Quality Report provides a global review of air quality data for the year 2023. The report summarizes PM2.5 air quality data from 7,812 cities spanning 134 countries, regions, and territories. The data utilized to create this report was aggregated from more than 30,000 air quality monitoring stations operated by research institutions, governmental bodies, universities and educational facilities, non-profit organizations, private companies, and citizen scientists. PM2.5 data is reported in units of micrograms per cubic meter (μg/m3) and incorporates the latest World Health Organization (WHO) annual PM2.5 guideline.
