Naïvely drawing 2500 SVG diagrams on the map is slow and cluttered. Mike came to my rescue and wrote a tiler for me so that I only render SVG when the location is visible. I also replaced the wind roses with simple circles when zoomed out too far. It'd be better to declutter by only drawing the most important weather stations at high zoom levels; I fear many people never realize they can zoom in on the map.
The station page is pretty simple: I had to cut a lot of planned features to meet my deadline. I've got code in development for filtering by month with animated transitions to show winds shifting over a year. Also plans for fancier histograms of wind speed, more airport data, etc. Lots to do here still, will be fun.