MET Norway Weather API (api.met.no)

MET Norway Weather API (api.met.no)

MET Norway's api.met.no serves weather products such as Locationforecast 2.0. No key is required, but every request needs an identifying User-Agent; api.met.no warns: "Are you getting 403 Forbidden errors? Read the FAQ and check your User-Agent header!"

Coverage

Coverage, update cadence and forecast horizon are set per product on api.met.no; not restated here beyond what the provider's own pages state. MET Norway's Terms of Service set a published traffic limit: "Keep total traffic below 20 requests per second." It also states: "Anything over 20 requests/second per application (total, not per client) requires special agreement."

Verdict

A keyless Nordic-focused weather API family, gated by an identifying User-Agent header rather than a key, and subject to a published 20 requests/second traffic limit. MET Norway's licence page says: "Unless specified otherwise, all data and products are licensed under the Norwegian Licence for Open 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." A separate Terms of Service page exists; read it before relying on this for a product. Signal Lab links only.