1、2|2023 World Air Quality Report About this report .3Executive summary .4Where does the data come from?.5Why PM2.5?.5Climate change and air pollution.6Data presentation .7Global PM2.5 map .82023 Country/region ranking .92023 World capital city ranking .10Overview of public monitoring status .11Region

2、al summaries .12East Asia .12China .13South Korea .14Southeast Asia .15Indonesia .16Malaysia .17Thailand .18Vietnam .19Central&South Asia .20Bangladesh .21India .22Pakistan .23West Asia .24Europe .25Ukraine .26Northern America .27United States .28Latin America&Caribbean .29Brazil .30Chile .31Colombi

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

4、39FAQ .40References .41Acknowledgments .45Contents3|2023 World Air Quality Report About this reportThe 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 territ

5、ories.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

6、 units of micrograms per cubic meter(g/m3)and incorporates the latest World Health Organization(WHO)annual PM2.5 guideline and interim targets for data visualization and risk communication(released in 2021).The 2023 World Air Quality Report was created from real-time air quality data sourced from IQ