Observation

Overview

SMHI’s Open Data platform provides access to 1-minute, hourly, daily and monthly observation values from SMHI’s meteorological station network across Sweden. No API key or registration is required — the API is fully public.

SMHI splits history into overlapping periods: corrected-archive (quality-controlled data up to roughly 3 months ago) and latest-months (the last ~4 months, still under quality control). Both are fetched and merged automatically, so a request spanning the boundary between them gets complete coverage without any extra configuration.

The 1_minute resolution is different: SMHI only exposes a short rolling window for it (via the latest-day period) — no historical backfill at all, similar to a real-time observation feed.

Not every station measures every parameter — a station/parameter combination that SMHI doesn’t have simply contributes no rows, the same as a station reporting no data for a requested date range.

License

Data is © SMHI, licensed under CC BY 4.0. See SMHI Open Data for further information and usage conditions.