In-browser analytics · DuckDB WASM
A full analytical SQL engine, running in your browser tab. No server, no backend. It queries decades of ERA5 reanalysis data on demand and returns the temperature departure from the 1991–2020 climate normals in seconds.
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Every computation runs in this browser tab. DuckDB WASM queries the Open-Meteo ERA5 reanalysis API directly, computes the monthly mean against the WMO climate normals, and returns the departure with zero egress cost and zero cloud dependency. A reader querying multi-decade climate data in their browser has already experienced the argument for local-first analytics before finishing the introduction. By Nauman Shahid.