Status: public, in preparation / change log
Maintainer: Federal Office of Meteorology and Climatology MeteoSwiss, opendata@meteoswiss.ch

MeteoSwiss - Open Data

Welcome to MeteoSwiss' Open Data documentation.

From April 2025, MeteoSwiss will make its data freely available to the public as Open Government Data (OGD).

The data can be downloaded as pre-processed files. In a later stage, customised queries via API will also be possible.

A Ground-based Measurements	B Atmosphere Measurements	C Climate Data	D Radar Data	E Forecast Data

Note

In order to also provide access to the data via APIs in future, the necessary preparatory work is underway. As soon as an introduction date for this second type of access can be estimated, it will be communicated here.

General information

Terms of Use

Here you'll find information about data license and conditions for usage.

Getting Started with Download

Here you'll find information about data granularity, structure and update cycle, time stamps and time intervals as well as on column separators, decimal dividers and missing values.

Staying up to Date

Our Download API will not be subject to big breaking changes, because it adheres to the OGC STAC API standard. Our partner swisstopo continuously develops and improves it, so minor changes and bug fixes might change the behavior of the API. If you suspect your integration has broken due to changed behavior,

• please check Release Notes (upcoming) where swisstopo announces released changes that might affect your integration.
• For operational status, see Download API Status & Contact (upcoming).

In the event of malfunctions at land-based stations,

• check for according messages of interruptions in data availability.

Understanding MeteoSwiss' Open Data products

The data of each Open Data product listed below has documentation on what it represents, its models, abstractions and terminology.

Ground-based Measurements

#	Open Data product	generated	integrated	accessible
A1	Automatic weather stations – Measured values	🟢	🟡	🟡
A2	Automatic precipitation stations – Measured values	🔴	🔴	🔴
A3	Automatic tower stations – Measured values	🔴	🔴	🔴
A4	Automatic soil stations – Measured values / not yet realised	⚪	⚪	⚪
A5	Manual precipitation stations – Measured values	🔴	🔴	🔴
A6	Totaliser precipitation stations – Measured values	🔴	🔴	🔴
A7	Pollen stations – Measured values	🔴	🔴	🔴
A8	Meteorological visual observations	🔴	🔴	🔴
A9	Phenological observations	🔴	🔴	🔴

Atmosphere Measurements

#	Open Data product	generated	integrated	accessible
B1	Radio soundings	🔴	🔴	🔴
B2	Raman-LIDAR for Meteorological Observation (RALMO) / not yet realised	⚪	⚪	⚪
B3	LIDAR Ceilometer CHM15K / not yet realised	⚪	⚪	⚪
B4	Ozone measurements – Total column (Dobson, Brewer) / not yet realised	⚪	⚪	⚪
B5	Ozone measurements – Profiles (O3 radio soundings, SOMORA) / not yet realised	⚪	⚪	⚪
B6	wiss Alpine Climate Radiation Monitoring (SACRaM) / not yet realised	⚪	⚪	⚪

Climate Data

#	Open Data product	generated	integrated	accessible
C1	Climate stations – Homogeneous measurements	🔴	🔴	🔴
C2	Climate precipitation stations – Homogeneous measurements	🔴	🔴	🔴
C3	Ground-based spatial climate data	🔴	🔴	🔴
C4	Satellite-based spatial climate data	🔴	🔴	🔴
C5	Radar-based spatial climate data	🔴	🔴	🔴
C6	Climate normals	🔴	🔴	🔴
C7	Spatial climate normals	🔴	🔴	🔴
C8	Climate scenarios	🔴	🔴	🔴

Radar Data

1. Basic radar data
2. Extended radar data
3. Combined precipitation calculations

E. Forecast Data

1. Short-term forecast data
2. Numerical weather forecasting model
3. Local forecast data