Data Sources and Attribution
Last updated: November 4, 2026
Thermometer++ shows current weather computed from official weather station observations. Our server collects reports from the sources below, checks and filters them, and interpolates them to your location. The values shown in the App are therefore derived from the original data and have been processed: they are not the original observations. None of the data providers endorse Thermometer++.
When our own data isn't available for a location, the App may show data from a third-party weather service instead (see Fallback weather services below).
Weather station observations
Europe: MeteoGate (EUMETNET)
Contains data from MeteoGate, the meteorological data service of EUMETNET, licensed under CC BY 4.0. Data owners:
- EUMETNET members and other national meteorological services (reports exchanged over the WMO Global Telecommunication System)
- Norwegian Meteorological Institute (MET Norway)
- Finnish Meteorological Institute (FMI)
- Royal Netherlands Meteorological Institute (KNMI)
Germany: Deutscher Wetterdienst
Source: Deutscher Wetterdienst (DWD), licensed under CC BY 4.0. Data processed.
France: Météo-France
Source: Météo-France, real-time surface observations, updated continuously. Licensed under the Licence Ouverte / Open Licence 2.0 (Etalab). Data processed.
Switzerland: MeteoSwiss
Source: MeteoSwiss, licensed under CC BY 4.0. Data processed.
Italy: ItaliaMeteo
Source: Agenzia ItaliaMeteo – MeteoHub, licensed under CC BY 4.0. Data processed. Data owners:
- Arpae Emilia-Romagna – Idro-Meteo-Clima Service
- Arpa Piemonte – Department of Natural and Environmental Risks
- ARPA Lombardia – Regional HydroNivoMeteorological Service and Climate
- ARPA Sicilia – Hydraulic and Hydrogeological Risk Service
- ARPAV – Veneto Regional Agency for Environmental Protection
- Arpal – Liguria
- Arpalazio – Lazio Regional Functional Center
- Arpacal – Calabria Regional Multi-risk Functional Center
- ARPAS – Sardinia Meteoclimatic Department
- Friuli Venezia Giulia Regional Meteorological Observatory (ARPA FVG – OSMER)
- Autonomous Province of Bolzano – Civil Protection Agency, Meteorology and Avalanche Prevention Office
- Autonomous Province of Trento – Prevention and Risks Service
- Toscana Region – Regional Hydrological Service (SIR)
- Umbria Region – Regional Hydrographic Service
- Marche Region – Civil Protection Service
- Campania Region – Regional Functional Center
- Puglia Region – Decentralized Functional Center
- Basilicata Region – Civil Protection Office
- Molise Region – Civil Protection Service, Decentralized Functional Center
Poland: IMGW-PIB
Źródłem pochodzenia danych jest Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy.
Dane Instytutu Meteorologii i Gospodarki Wodnej – Państwowego Instytutu Badawczego zostały przetworzone.
(The source of the data is the Institute of Meteorology and Water Management – National Research Institute. The Institute's data have been processed.)
Japan: Japan Meteorological Agency
Created by Thermometer++ based on AMeDAS observations (Japan Meteorological Agency) (https://www.jma.go.jp/bosai/amedas/). Used under the JMA website Terms of Use (Public Data License 1.0).
Terrain elevation
- Station elevations: Produced using Copernicus WorldDEM-90 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved.
- Elevation of your location: Global 15″ digital elevation model by Jonathan de Ferranti, Viewfinder Panoramas.
Location search
Place names and coordinates from GeoNames, licensed under CC BY 4.0.
Fallback weather services
When our own data isn't available for a location, the App may show data from one of these services.
- Weather data © OpenWeather, licensed under the Open Database License (ODbL).
- Weather data by Open-Meteo.com, licensed under CC BY 4.0.
Other sources
These sources don't require attribution; they're listed for completeness:
- METAR and SYNOP reports from the US National Weather Service (NOAA) and station information from the Aviation Weather Center.
- Station metadata from WMO OSCAR/Surface.
Contact Us
If you have questions about the data or notice a missing or incorrect attribution, contact us at support@singularioapps.com.