⚠️ Status: in preparation / change log.

MeteoSwiss - Open Data

Welcome to MeteoSwiss' Open Data documentation.

⚠️ We are currently setting up our service as ALPHA. Everything is subject to change without prior notice.

Starting in April 2025, MeteoSwiss will gradually make its data freely accessible to the public as Open Government Data (OGD). The data can be downloaded as pre-processed files.

• Priority columns in the tables below show the planned order in which the datasets/collections become available.
• Planning can be adjusted on an ongoing basis.

In order to also offer the option of accessing the data at a later stage using individual queries via APIs, the necessary preparatory work is underway. As soon as introduction dates for this second type of access can be estimated, they will be communicated here.

Available Data

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

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 how to download files either manually or programmatically, learn about how data files are structured (data granularities and update cycles), and how date/time, time intervals and missing values are represented.

Staying up to Date

For operational status, see Download API Status & Contact [upcoming]

geo.admin.ch's download service 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, check Release Notes where swisstopo announces released changes that might affect your integration.

In the event of malfunctions at ground-based stations, check for interruptions in data availability.

We keep interested parties and users up to date on our plans and changes: register for our newsletter [upcoming]

Frequently Asked Questions

Here [upcoming] you'll find answers to the most frequently asked questions.

We continuously update these based on questions received. If you cannot find an answer to your question, contact us.

Contact

If you have questions about the data, or how to use the download service, please read the Frequently Asked Questions [upcoming].

If you are unable to find the answer you are looking for, contact us: [email protected]

Understanding MeteoSwiss' Open Data

The documentations of the Open Data products linked below explain what the data represents, its models, abstractions and terminology.

ℹ️ Priority columns below show the planned order (from 1️⃣ to 4️⃣) in which the datasets/‘Collections‘ become available. Planning can be adjusted on an ongoing basis.

ℹ️ File metadata: All point measurement datasets/‘Collections‘ have three ‘file metadata’ files: meta_stations.csv, meta_parameters.csv and datainventory.csv.
They are provided as ‘Assets’ to the corresponding dataset/‘Collection‘ (not at the level of each individual ‘Item‘/station.

A - Ground-based Measurements

#	Dataset/Collection name	Technical name	Priority	latest Open Data processed	latest Open Data & 'File metadata' available
A1	Automatic weather stations	ogd-smn	1️⃣	🟢	🟡 ALPHA (50/160 stations, File metadata)
A2	Automatic precipitation stations	ogd-smn-precip	1️⃣	🟢	🟡 ALPHA (50/160 stations, File metadata)
A3	Automatic tower stations	ogd-smn-tower	1️⃣	🟡	⚪ ALPHA (File metadata)
A4	Automatic soil stations - Data not yet available	ogd-smn-soil	4️⃣
A5	Manual precipitation stations	ogd-nime	1️⃣	🟡	⚪ ALPHA (File metadata)
A6	Totaliser precipitation stations	ogd-tot	1️⃣	🟡	⚪ ALPHA (File metadata)
A7	Pollen stations	ogd-pollen	1️⃣	🟡	⚪ ALPHA (File metadata)
A8	Meteorological visual observations	ogd-obs	1️⃣	🟡	⚪ ALPHA (File metadata)
A9	Phenological observations	ogd-phenology	1️⃣	🟡	⚪ ALPHA (File metadata)

B - Atmosphere Measurements

#	Dataset/Collection name	Technical name	Priority	latest Open Data processed	latest Open Data & File-Metadata available
B1	Radio soundings	ogd-radiosounding	2️⃣	⚪	⚪ ALPHA (File metadata)
B2	Raman-LIDAR for Meteorological Observation (RALMO)	ogd-lidar-raman	4️⃣
B3	LIDAR Ceilometer CHM15K	ogd-lidar-ceilo	4️⃣
B4	Ozone measurements – Total column (Dobson, Brewer)	ogd-ozone-dobsonbrewer	4️⃣
B5	Ozone measurements – Profiles (O3 radio soundings, SOMORA)	ogd-ozone-somora	4️⃣
B6	Swiss Alpine Climate Radiation Monitoring (SACRaM)	ogd-radiation-sacram	4️⃣

C - Climate Data

#	Dataset/Collection name	Technical name	Priority	latest Open Data processed	latest Open Data & File-Metadata available
C1	Climate stations – Homogeneous measurements	ogd-nbcn	1️⃣	🟡	⚪ ALPHA (File metadata)
C2	Climate precipitation stations – Homogeneous measurements	ogd-nbcn-precip	1️⃣	🟡	⚪ ALPHA (File metadata)
C3	Ground-based spatial climate data - Precipitation, Temperature, Relative Sunshine Duration	ogd-surface-derived-grid	2️⃣	🟡	⚪ PoC
C4	Satellite-based spatial climate data - Global, Diffuse & Direct Radiation, Cloud Fractional Cover	ogd-satellite-derived-grid	2️⃣	🟡	⚪ PoC
C5	Radar-based spatial climate data - Maximum Hailstone Size, Number of Hail Days - Data expected to be available in May 2025	ogd-radar-derived-grid	3️⃣
C6	Climate normals	ogd-climate-normals	2️⃣	🟡	⚪
C7	Spatial climate normals	ogd-climate-normals-grid	2️⃣	🟡	⚪
C8	Climate scenarios - CH2025 data expected to be available in Autumn 2025	ogd-climate-scenarios	1️⃣	🟢 CH2018 (referenced)	⚪
C9	Spatial climate scenarios - CH2025 data expected to be available in Autumn 2025	ogd-climate-scenarios-grid	1️⃣	🟢 CH2018 (referenced)	⚪

D - Radar Data

#	Dataset/Collection name	Technical name	Priority	latest Open Data processed	latest Open Data & 'File metadata' available
D1	Precipitation radar products	ogd-radar-precip	3️⃣	⚪	⚪
D2	Reflectivity-based radar products - ... ?	ogd-radar-reflectivity	3️⃣	⚪	⚪
D3	Hail radar products - Probability of Hail, Maximum Expected Severe Hail Size	ogd-radar-hail	3️⃣	⚪	⚪
D4	Convection radar products - not yet realised	ogd-radar-convection	4️⃣
D5	Polar 3D radar products - not yet realised	ogd-radar-polar3d	4️⃣

E - Forecast Data

#	Dataset/Collection name	Technical name	Priority	latest Open Data processed	latest Open Data & 'File metadata' available
E1	Short-term forecast data	ogd-nowcasting	3️⃣	⚪	⚪
E2	Numerical weather forecasting model CH1	ogd-forecasting-icon-ch1	2️⃣	🟡	⚪
E3	Numerical weather forecasting model CH2	ogd-forecasting-icon-ch2	2️⃣	🟡	⚪
E4	Local forecast data	ogd-local-forecasting	2️⃣	🟡	⚪ ALPHA (File metadata)