I could not change it back to Edmonton, so I opened a ticket with pwsweather.com (Aeris) and they found the issue. When I first created the station, I neglected to put the negative in there. When I fixed it shortly after, it was too late. The system doesn’t update unless you force it.
Aeris has forced an update and now the API is showing correct results. Once it rains next (Thursday?) I’ll update this thread if my problem is solved!