I am having he same issue and sent this feedback through their "contact" link:
I was wondering if your technical team could fix a small annoyance with my PWS page (
https://www.wunderground.com/dashboard/pws/KCAARNOL99). When you click on the "FORECAST FOR ARNOLD, CA" link right below the station neighborhood and ID, it take me to an area 30 miles east and about 3,000 feet higher in elevation. This is significant because the climate and forecast are quite different. For example, it is forecasting snow by the foot this week versus inches where the PWS is located. I understand that the reason for this might be due to the sharing of the same zip code, but this PWS (
https://www.wunderground.com/dashboard/pws/KCAARNOL116) is not far from mine, and if you click on the forecast link for that page, it shows the correct geographic area.
I'm sure this will fall on deaf ears, but I wish they'd listen to the people that give their site life.