AviWX

AviWx provides hourly weather updates in your Mac's menu bar and tells you whether conditions are legal for VFR. Using METARs directly from a nearby airport, AviWx provides data on wind, visibility, temperature, dewpoint, altimeter setting, precipitation, and sky condition. As always, don't believe anything a program tells you when it comes time to actually storm the barn.

AviWx can only report weather at stations in the United States.