Thanks for the suggestions, everyone.
I did get a new API key, but it seems to do nothing for me. A page that I landed on seems to indicate that they aren't supporting API keys for non-paying customers anymore (although my account says I am paid through 2020- which must be because I run a PWS). Either way- I was never happy with the frequency at which I could update the data due to the maximum number of calls per day, so I'm much happier with the solution I found to pull fresh data straight from my own station into indigo every 15 seconds.
Rocco