You could use the NOAA.gov site for weather in the United States.  They also have international locations.  Current weather at [Watsonville,CA, US|http://weather.noaa.gov/weather/current/KWVI.html], current weather in [Kabul,AF|http://weather.noaa.gov/weather/current/OAKB.html]  Provides a lot more data then just an image.  Maybe use the station as an input for the plugin.