Latest JSON service from geonames provides near realtime weather from Internet Weather Source. More than 7200 airports update every hour. Current temperature and wind direction is displayed via an icon.

violet dark blue blue turquoise green yellow orange red
<-40°C <-20°C <0°C <10°C <20°C <30°C <40°C >40°C
N NNW NWW W WWS WSS S
0-1 bft 2-3 bft 4-6 v 7-9 bft 10+ bft 7-9 bft 4-6 bft 2-3 bft

You see temperature is color coded from violet to red. The angle decribes the windspeed in beaufort. More infomation you’ll get by clicking on the icons in explorer.