Gets the weather data from wunderground website and displays the information using conky. This just helps in not having a web page open all the time. Having the web page open has it's own benefits since not all the information is available here.
Visit http://foreverquest.blogspot.in for program update information.
Please see the conkywx wiki - it has all the documentation about the program and is also available as man conkywx after the program is installed.
There are many templates you can use from the examples directory or make your own templates.