Its API keys that you get from AmbientWeather.com. You get an account there, and create the API key. The Device key I could never figure out how to create. I contacted Sol-Ark and their reply is shown below. So, I gave up on that feature inside of PowerView.
Powerview is a third party service provider that many companies use to provide online monitoring for their product. It includes some inputs for features that aren't applicable to our product, and the weather function is one of them.