Robert Moskowitz:
This extension gets its weather information from the Norway weather service, and you can't change this.
Suvayu Ali:
This is standard practise among many FOSS weather monitoring tools. A year or so back most popular weather feeds either stopped, went proprietary, or kept changing their feed structure too often. At this point many FOSS weather tools moved to the service provided by Norwegian Weather Institute. It is never going to go proprietary, and will most likely stay alive for the foreseeable future. It is also rather reliable.
While that sounds reasonable, the 15 second refresh period does not. Does it really do that? Is it really necessary to do so?