There's also NASA World Wind, which should be able to:
* Show isobars on a globe of the earth
* Show air pressure as a blanket that gets higher and lower based on what's recorded
* Show wind speed
worldwindcentral.com/wiki/index.php?title=NASA_World_Wind_Download
However it appears you need a degree in rocket surgery before you can get it to do anything useful. As far as I can tell, it's made for and by professors, who love more than anything to confuse themselves with complexity 
