| AEMET | Agencia Estatal de Meteorología | Spain | © AEMET |
| CHMI | Český hydrometeorologický ústav | Czechia | © Czech Hydrometeorological Institute (CHMI) |
| DMI | Danmarks Meteorologiske Institut | Denmark | © DMI (Danish Meteorological Institute), CC BY 4.0 |
| DWD | Deutscher Wetterdienst | Germany | © Deutscher Wetterdienst (DWD), Climate Data Center (CDC) |
| ECCC | Environnement Et Changement Climatique Canada | Canada | © Environment And Climate Change Canada (ECCC) |
| FMI | Ilmatieteen laitos | Finland | © Finnish Meteorological Institute |
| IMGW | Instytut Meteorologii i Gospodarki Wodnej | Poland | © IMGW, Observations |
| IPMA | Instituto Português do Mar e da Atmosfera | Portugal | © IPMA (Instituto Português do Mar e da Atmosfera) |
| KNMI | Koninklijk Nederlands Meteorologisch Instituut | Netherlands | © KNMI |
| LHMT | Lietuvos hidrometeorologijos tarnyba | Lithuania | © LHMT (Lietuvos hidrometeorologijos tarnyba) |
| NOAA | National Oceanic And Atmospheric Administration | United States Of America | © National Oceanic And Atmospheric Administration (NOAA), Global Historical Climatology Network |
| RMI | Koninklijk Meteorologisch Instituut / Institut Royal Météorologique | Belgium | © RMI (Royal Meteorological Institute of Belgium), CC BY 4.0 |
| WSV | Wasserstraßen- und Schifffahrtsverwaltung des Bundes | Germany | © Wasserstraßen- und Schifffahrtsverwaltung des Bundes (WSV), Pegelonline |
| EA | Environment Agency | United Kingdom | © Environment Agency of UK |
| NWS | NOAA National Weather Service | United States Of America | © NOAA NWS (National Weather Service), Observations |
| Eaufrance | Eaufrance | France | © Eaufrance |
| Geosphere | Geosphere Österreich | Austria | © ZAMG, Observations |
| Météo-France | Météo-France | France | © Météo-France, Etalab Open License 2.0 |
| MeteoSwiss | MétéoSuisse | Switzerland | © MeteoSwiss (Federal Office of Meteorology and Climatology), CC BY 4.0 |
| MetNo Frost | Meteorologisk institutt | Norway | © Norwegian Meteorological Institute (MET Norway) |
| MetOffice | Met Office | United Kingdom | © Crown Copyright, Met Office, MIDAS Open, Open Government Licence v3.0 |
| SMHI | Sveriges meteorologiska och hydrologiska institut | Sweden | © SMHI |