Foehn is an open-source toolkit for accessing, transforming, and serving MeteoSwiss Open Data via a Python API, CLI, and Model Context Protocol (MCP) server. It is ideal for developers, data scientists, researchers, and anyone interested in Swiss weather data, providing seamless conversion of tabular and gridded datasets (CSV, NetCDF, GRIB2, ODIM) to modern formats (Parquet, xarray, Zarr) and enabling direct, live access for LLMs through its MCP server.
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