using validated and up-to-date data Cover design: EEACover image:©Jaume ArchilésLayout: EEA / ETC HE Publication Date:April 2026 Legal notice Preparation of this report has been funded by the European Environment Agency (EEA) as part of agrant with the European Topic Centre on Human health and the environment (ETC-HE) and expressesthe views of the authors. The contents of this publication do not necessarily reflect the position oropinion of the European Commission or other institutions of the European Union. Neither the EuropeanEnvironment Agency nor the European Topic Centre on Human health and the environment is liable forany consequence stemming from the reuse of the information contained in this publication. How to cite this report:Targa, J., Colina, M., Banyuls, L., González Ortiz, A., Soares, J. (2026).Status report of air qual- ity in Europe for year 2025, using validated and up-to-date data. ETC HE Report 2026/2. Zenodo.https://doi.org/10.5281/zenodo.19555512 The report is available from https://www.eionet.europa.eu/etcs/all-etc-reports. EEA activity no. 3Human health and the environment. ETC-HE coordinator:NILU - Stiftelsen Norsk institutt for luftforskning (NILU - Norwegian Institute for AirResearch) ETC-HE consortium partners:Federal Environment Agency/Umweltbundesamt (UBA), Aether Limited,Czech Hydrometeorological Institute (CHMI), Institut National de l’Environnement Industriel et des Risques(INERIS), Swiss Tropical and Public Health Institute (Swiss TPH), Universitat Autònoma de Barcelona (UAB),Vlaamse Instelling voor Technologisch Onderzoek (VITO), 4sfera Innova S.L.U., klarFAKTe.U Copyright notice©European Topic Centre on Human health and the environment, 2025. Reproduction is authorized provided the source is acknowledged. More information on the European Union is available on the Internet (http://europa.eu). Acknowledgements This report has been produced by the European Topic Centre on Human health and the Environment(ETC HE) in close cooperation with the EEA. The ETC task manager was Jaume Targa,closely assisted by María Colina and Joana Soares,and the EEA project manager was Alberto González Ortiz closely assisted by Silvia Monge and RagnhildurFinnbjornsdottir. Additional EEA contributors were Artur Gsella.Additional ETC HE contributors were MichelHoussiau (under 4sfera Innova), Jaume Archilés (4sfera Innova) and Rune Ødegård (NILU). Thanks are due to the air quality data suppliers in the reporting countries for collecting, provid-ing and reviewing the data on which this report is based. Contents 1Summary4 1.1Particulate matter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61.2Ozone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61.3Nitrogen dioxide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61.4Sulphur dioxide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61.5Editorial note. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82Introduction93Status of particulate matter ambient air concentrations143.1Status of PM10concentrations. . . . . . . . . . . . . . . . . . . . . . . . . .143.2Status of PM2.5concentrations . . . . . . . . . . . . . . . . . . . . . . . . . .244Status of ozone ambient air concentrations315Status of nitrogen dioxide ambient air concentrations446Status of sulphur dioxide ambient air concentrations517Abbreviations, units and symbols558Annex 1569Annex 2 - Air quality status in relation to the new standards in the revised AAQD (EU)2024/2081609.1Status of PM10concentrations. . . . . . . . . . . . . . . . . . . . . . . . . .639.2Status of PM2.5concentrations . . . . . . . . . . . . . . . . . . . . . . . . . .669.3Status of O3ambient air concentrations. . . . . . . . . . . . . . . . . . . . .699.4Status of NO2ambient air concentrations. . . . . . . . . . . . . . . . . . . .729.5Status of SO2concentrations. . . . . . . . . . . . . . . . . . . . . . . . . . .75 1 Summary The2025 Status report of air quality in Europepresents summarized information on the airquality data for the protection of health reported in the previous years. The reported 2025monitoring data used in this analysis was reported as up-to-date (UTD) data, prior to final qualitycontrol and validated data reporting by the countries (1). It provides information on the followingpollutants, regulated by the Ambient Air Quality Directives (AAQD) (EU, 2008, 2024) •PM10: Particulate matter with a diameter of 10μm or less•PM2.5: Particulate matter with a diameter of 2.5μm or less•O3: Tropospheric ozone•NO2: Nitrogen dioxide•SO2: Sulphur dioxide It also offers a comparison with the situation in previous years. For those years, validated dataare considered. Data included in this report was received by 09 February 2026 from the reporting countries. Bythat date the reporting status of 2025 up-to-date data is summarized in Figure 1, where a greenbox indicates that the referred pollutant was r