This is a good utilisation of an existing technology e.g. airport locations, free weather availability and RSS (via Alex Barnett). This link lists countries outside the US and Canada that the service supports, and Melbourne weather is here (using ICAO code YMML).
This is handy to be able to tell the wife when it's OK to hang washing on the line, or to know if I need my umbrella to walk out to the car. I don't know if I've got a use for visibility, windspeed, and barometer readings just yet, but it is handy to have this kind of news delivered to me if I need it.