If you mean reported temperature and reported wind (basically wx station reports) it is not possible now. Observation is not a part of our map, but it is standalone plugin. We would like to make it accessible via API in the future (as well as forecast, airports, ...), but I cannot promise you that right now.
Unfortunately it is possible to run only one instance of Windy map on one page. As it stands at official documentation:
There can be only one instance of Windy Map on a page, but you can use multiple instances of Leaflet map on the same page.
It would be great to have at least the CAPE of IconEu in paid API! Global CAPE would also be available in GFS model, but you don't have it either in windy.com. Have you ever thought to have CAPE of GFS in Windy?
@fastseas Great!! Thanks for you time. It's now working. The reason was The special characters, because I had authorized my domain... @ivo FYI The special characters in domain cause problems with API4. It's maybe good idea to mention this on the API-page (https://api4.windy.com/api-key/)?