DWD API
Weather
API of the German Weather Service (DWD): weather data, data from specific weather stations, warnings (local, coast, sea, alps)
No keyCORSHTTPS
KNMI
Dutch weather, radar and climate data
Verified 4 days ago: 100% uptime
API key
Required
HTTPS
Supported
Browser calls
No, needs a proxy
Status
Live · 100/100
What our checks found
- Health score
- 100/100
- Reliability
- 100%
- Average latency
- 710ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for KNMI. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# Requires an API key. Check the docs for whether it goes in a header or a query parameter.
curl -s "https://developer.dataplatform.knmi.nl/ENDPOINT" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
Where this listing comes from
Aggregated from one public source (public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
Other Weather APIs
See all 64 →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
KNMI — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is KNMI free to use?
KNMI is listed in our free catalogue, but it requires an API key, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Does KNMI need an API key?
Yes. KNMI authenticates with an API key. Keep it server-side rather than in browser code, because anything in your frontend bundle is readable by anyone who opens developer tools.
Can I call KNMI from browser JavaScript?
Not directly. KNMI did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Is KNMI still working?
Yes, as of 2026-09-18. Our automated check reached KNMI and recorded a 100% reliability score with a median response time of 710 ms. We re-check on a schedule, and this page updates with the result.
Is KNMI available over HTTPS?
Yes. KNMI serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.