1、2|2024 World Air Quality Report About this report .3Executive summary .4Where does the data come from?.5Why PM2.5?.5Schools4Earth.6The greater impact of PM pollution on children.7Data presentation .8Global PM2.5 map .92024 Country/region ranking .102024 World capital city ranking .11Overview of publ

2、ic monitoring status .12Regional summaries .13East Asia .13China Mainland .14South Korea .15Southeast Asia .16Indonesia .17Malaysia .18Thailand .19Vietnam .20Central&South Asia .21India .22Pakistan .23West Asia .24Europe .25Ukraine .26Northern America .27United States .28Latin America&Caribbean .29B

3、razil .30Chile .31Colombia .32Africa .33Chad .34South Africa .35Oceania .36Next steps .37What can governments do?What can I do?.37Become an outdoor data contributor .38Methodology .39Data sources .39Data validation .39Data calibration .39Data calculation .39City level data .39Country/region data .39

4、Data availability .40Disclaimer .40FAQ .41References .42Acknowledgments .46Contents3|2024 World Air Quality Report About this reportThe 2024 World Air Quality Report evaluates the global state of air quality for the year 2024.This comprehensive report presents PM2.5 air quality data collected from 8

5、,954 cities across 138 countries,regions,and territories.The data used herein is sourced from over 40,000 regulatory air quality monitoring stations and low-cost sensors,operated by a diverse range of entities,including government agencies,research institutions,non-profit organizations,schools,unive

6、rsities,private sector companies,and dedicated citizen scientists worldwide.The PM2.5 data is measured in micrograms per cubic meter(g/m)and the data is visualized as a function of the World Health Organization(WHO)annual PM2.5 air quality guideline.The air quality metrics included in this 2024 repo