There is more information on this post here.

I agree with you the current state is not very usable for Zimmerman calculation and we are hoping to improve that.įor the record, added a PR to the Weather API we provide which allows you to query a local weather station directly and allow OpenSprinkler to directly use this data.

I am hoping my choosing just OWM, we can continue to refine and improve this service for everyone. This isn’t a small undertaking but the problem before was the large array of weather APIs we interfaced with caused me not to truly focus on any single one. Once we have this caching system in place, we will add historical API to our Weather API and allow it to properly get the data needed when it’s missing or use the cached data when appropriate. We just upgraded our OWM account to provide better forecast data and we are planning on implementing a caching system so we can lower the number of redundant calls to the API (both the app and the device are querying the same location for the same data now). I agree with you there is a discrepancy in the quality of data we have now versus with WUnderground.

Wunderground developer api key