MET Norway weather API (api.met.no)

Where a forecast comes from · Open data and APIs · id data-metno-api · as data

Locationforecast and other products as JSON for any point on Earth, no key, an identifying User-Agent required.

Address: https://api.met.no/ (leaves this site)

What it is connected to, and who says so

The same thing elsewhere on this site: source:met-no in the register of sources (a join we state, not a match by address).

This	Verb	That	The page that says so	Read	Check
MET Norway weather API (api.met.no)	carries	ECMWF IFS	docs.api.met.no: "forecasts are updated once every hour. For medium range forecasts (2–10 days) the 51 member ensemble forecast from ECMWF is used. It it updated twice pr day. Horizontal resolution is approximately 9 km. Air temperature, " Outside the Nordic area the Locationforecast is ECMWF's: Lisbon and Funchal are outside.	11:29 UTC, 11 Nov	stated on the page
MET Norway weather API (api.met.no)	carries	MEPS (MetCoOp)	docs.api.met.no: "meteorologists. Nordic area The weather forecasting model for the Nordic area is the MetCoOp Ensemble Prediction System ( MEPS ). MetCoOp is the Meteorological Cooperation on Operational Numeric Weather Prediction (NWP) " Nordic area only.	11:29 UTC, 11 Nov	stated on the page
MET Norway weather API (api.met.no)	published by	MET Norway	api.met.no: "0.1 Forecast of air-quality for locations in Norway 🌐 Frost 0.9 REST API for meteorogical observation data 🌐 Locationforecast 2.0 Weather forecasts for any location on earth MetAlerts 2.0 Weather alerts from the Norweg"	11:29 UTC, 11 Nov	stated on the page
MET Norway weather API (api.met.no)	visualised by	Yr (MET Norway and NRK)	api.met.no: "Government Data (NLOD) 2.0 and Creative Commons 4.0 BY International licences. Credit should be given to The Norwegian Meteorological Institute, shortened MET Norway , as the source of data. Some suggestions: «Data from " To be re-read on Yr's own page (its help centre refused our reader).	11:29 UTC, 11 Nov	stated on the page

Licence: what we may do with it

MET Norway (api.met.no, Locationforecast): NLOD 2.0 and CC BY 4.0 (api.met.no, read 11:29 UTC, 11 Nov, stated on the page).

Read	Store	Show	Transform	Attribution
yes	yes	yes, with attribution	yes, with attribution	"Data from MET Norway" or "Based on data from MET Norway".

Terms of service: an identifying User-Agent, caching, no more than 20 requests a second; outside the Nordic area the forecast is ECMWF's.

What it offers for Lisbon and Madeira this week

A point forecast for anywhere on Earth: mean wind, direction, pressure, temperature, cloud, rain. Outside the Nordic area it is ECMWF's forecast, post-processed. "complete" adds gusts and percentiles.

Endpoint: https://api.met.no/weatherapi/locationforecast/2.0/compact?lat=38.72&lon=-9.14
Key: none; an identifying User-Agent is required
Format: JSON (GeoJSON)
Size: 3.0 KB gzipped per place, 92 time steps (our probe)
Cadence: updated about hourly near the present; the model behind it four times a day
This week (probe read 02:29 UTC, 11 Nov): Read 02:29 UTC: Lisbon and Funchal answered; the forecast's own "updated_at" was 01:19 UTC. Already in our data room as forecast.json → second_models.met_no.
How to read it: One GET per point; honour Expires and If-Modified-Since.
Limits: No gusts in "compact". Their terms ask for caching and at most 20 requests a second.
A small sample, as returned: met-norway-lisbon.json

Not a warning service: this page explains where data comes from. For warnings follow IPMA and ANEPC.