Hello,
Love the site, been using it for years now and it's come a long way - well done!
http://www.metcam.navcanada.ca/hb/index.jsp?lang=e
You can find all of the public access airport weather cams for Canada on this page - not sure how you would go about integrating the data or if it's even possible, but it would be cool to be able to see the live cams through Windy.
Thanks!