From time to time one finds sites that are really neat! This is the case of the just launched and really interesting Czech Windyty site. It shows a dynamic graphical depiction of winds, temperatures, pressures, clouds and humidity around the world using real-world data from different sites. It has nice and useful features namely it shows metars, maps at higher zoom levels, and the ability to change the altitudes and overlay filters. Also, you can click on anywhere in the map and it displays weather trends and corresponding forecasts. Give it a try because it is worth of it!