Interim European air quality maps for 2021. PM10, NO2 and ozone spatial estimates based on non-validated UTD data. ETC HE Report 2022/4.

This report presents European interim air quality maps for 2021, which are based on the non-validated up-to-date (UTD) measurement data and the CAMS Ensemble Forecast modelling results, together with other supplementary data. It contains maps of PM₁₀ and NO₂ annual averages and ozone indicator SOMO35.

The report presents interim 2021 maps for PM₁₀ annual average, NO₂ annual average and the ozone indicator SOMO35. The maps have been produced based on the 2021 non-validated E2a (UTD) data of the AQ e-reporting database, the CAMS Ensemble Forecast modelling data and other supplementary data. Together with the concentration maps, the inter-annual differences between years 2020 and 2021 are presented (using the 2020 regular and the 2021 interim maps), as well as basic exposure estimates based on the interim maps. The report also validates the interim maps for 2020 as presented in Eionet Report ETC/ATNI 2021/19 and the exposure tables created based on these maps.