DWD API
Weather
API of the German Weather Service (DWD): weather data, data from specific weather stations, warnings (local, coast, sea, alps)
No keyCORSHTTPS
FMI Open Data
Finnish weather, sea, climate and radar observations via open WFS
API key
Not required
HTTPS
Supported
Browser calls
Yes, CORS enabled
Status
Not yet checked
How to call it
A starting template for FMI Open Data. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# No authentication required.
curl -s "https://en.ilmatieteenlaitos.fi/ENDPOINT" \
-H "Accept: application/json"Where this listing comes from
Aggregated from one public source (public-apis), then normalised and checked by us.
Report an issue with this listing ↗Other Weather APIs
See all 68 →Meteorologisk Institutt
Weather
Weather and climate data
No keyCORSHTTPS
Open-Meteo Ensemble
Weather
Weather ensemble forecasts from multiple models
No keyCORSHTTPS
openSenseMap
Weather
Data from Personal Weather Stations called senseBoxes
No keyCORSHTTPS
US Weather
Weather
Weather forecasts and alerts from the US National Weather Service
No keyCORSHTTPS
wttr.in
Weather
Weather in your terminal, supports JSON output
No keyCORSHTTPS
FMI Open Data — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is FMI Open Data free to use?
FMI Open Data is listed in our free catalogue and required no credential when we called it. It needs no authentication at all, so you can send a request without signing up. Free tiers can still carry rate limits or non-commercial terms, so check the provider's own terms before shipping.
Does FMI Open Data need an API key?
No. We called FMI Open Data on our last run with no key, no token and no Authorization header, and it responded. That is what puts it in our no-key collection.
Can I call FMI Open Data from browser JavaScript?
Yes. FMI Open Data returned CORS headers when we checked it, so a browser will let your page read the response. You can fetch it directly from client-side JavaScript with no proxy and no backend.
Is FMI Open Data available over HTTPS?
Yes. FMI Open Data serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.