@saaneuvos Sorry about the delay.
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.
No.
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.