It would be useful to see the data that it polled or at least see the watering percentage in the UI somewhere. If you could add this to the status it would be great.
Something like
watering% 10% or whatever….
This would help out to know that we typed in the correct, zipcode, pws:code or whatever.
Since the data comes from Wunderground, you can just go to Wunderground.com, put in your location, and the temperature, humidity information you get there is the same as the data that went into the equation.