3MGWeather is an android weather app with a forecast of 10 days & also works in offline mode.
You need to add the API Keys to run the project. For this purpose register for a free account at https://www.apixu.com & https://www.wunderground.com and get the api keys. Note: for wunderground select FREE CUMULUS PLAN. Then Edit the MMMGWeatherSyncAdapter.java file at // TODO: Add API Keys below here. That's all now you can run the project.