It is my understanding that Weather Underground will provide free Replacement APIs for Personal Weather Station Contributors in the near future. They are not fee-based and contain:
– Current observations from the PWS network
– 5 day daily forecast
– PWS historical data
– PWS lookup by geocode, zip code and location
– Call volume: 1500/day, 30/minute
Details can be found here.
This will e.g. allow Netatmo Weather Station owners who send their data to WU to continue to use WU as a weather source for OpenSprinkler. However, some adaptations will be needed to the OpenSprinkler Weather Service script to retrieve the weather information. I hope that Ray or Samer will provide some information, if they will update their OpenSprinkler product accordingly?
From what I know OpenWeatherMap will not provide historical weather data for free, which makes it difficult to use the Zimmerman method in it’s original way. Please correct me if I’m wrong?
Regards
Franz