# PM2.5, European air quality data for 2021, (interpolated data), August 2023

The data set provides values for the human health related indicator of PM2.5 (annual average concentration) at 1 km2 grid combining monitoring air quality data in a ‘regression-interpolation-merging mapping’ methodology and the observational values of the air quality monitoring stations used in the interpolation. It covers Europe for the year 2021.

This data set is used to estimate population exposure to air pollution and for the health impact assessments published by the EEA (see, for example, Health impacts of air pollution in Europe, 2022 — European Environment Agency (europa.eu) at https://www.eea.europa.eu/publications/air-quality-in-europe-2022/health-impacts-of-air-pollution). The methodology and the corresponding maps can be found in the 2023 ETC HE report 2023/3 "Air quality maps of EEA member and cooperating countries for 2021. PM10, PM2.5, O3, NO2, NOx and BaP spatial estimates and their uncertainties" https://www.eionet.europa.eu/etcs/etc-he/products/etc-he-products/etc-he-reports/etc-he-report-2023-3-air-quality-maps-of-eea-member-and-cooperating-countries-for-2021-pm10-pm2-5-o3-no2-nox-and-bap-spatial-estimates-and-their-uncertainties.https://sdi.eea.europa.eu/geonetwork/srv/api/records/c0ca09a4-d9fe-4772-bc48-90cf31639442


[More information](https://sdi.eea.europa.eu/catalogue/srv/api/records/c0ca09a4-d9fe-4772-bc48-90cf31639442)
    