IQAir：2025年全球空气质量报告（英文版）（44页）.pdf

1、2|2025 IQAir World Air Quality ReportAbout this Report .3Executive summary .4Where does the data come from?.5Why PM2.5?.5Bangkok:A city-led model for public engagement .6Data presentation .72025 Global PM2.5 Map .82025 Country/region ranking .92025 World capital city ranking .10Overview of public mo

2、nitoring status .11Regional summaries .12East Asia .12China Mainland .13South Korea .14Southeast Asia .15Indonesia .16Malaysia .17Thailand .18Vietnam .19Central&South Asia .20India .21Pakistan .22West Asia .23Europe .24Ukraine .25Northern America .26United States .27Latin America&Caribbean .28Brazil

3、 .29Chile .30Colombia .31Africa .32South Africa .33Oceania .34Next steps .35What can governments do?What can I do?.35Become an outdoor data contributor .36Methodology .37Data sources .37Data validation .37Data calibration .37Data calculation .37City level data .37Country/region data .37Data availabi

4、lity .38Disclaimer .38FAQ .39References .40Acknowledgments .44Contents3|2025 IQAir World Air Quality ReportAbout this ReportThe 2025 IQAir World Air Quality Report provides a comprehensive overview of air quality across the globe for the calendar year 2025.This Report presents PM2.5 air quality data

5、 sourced from 9,446 cities spanning 143 countries,regions,and territories.The information is sourced from more than 40,000 regulatory monitoring stations and low-cost sensors,managed by a wide array of contributors,including government agencies,universities,non-profit organizations,private enterpris

6、es,and engaged citizen scientists around the world.PM2.5 concentrations are reported in micrograms per cubic meter(g/m),following the World Health Organization(WHO)annual PM2.5 air quality guideline and interim targets.This standardized approach supports effective data visualization and clear risk c