The present invention enhances the accuracy of predicting a future greenhouse internal environment, while minimizing costs required for sensor installation and maintenance, etc. Provided is an information processing device comprising: a prediction unit which uses a greenhouse internal environment prediction model obtained by machine learning that is executed, using weather observation information as input, on the basis of result information related to the greenhouse internal environment, and which predicts the greenhouse internal environment on the basis of weather prediction information; and an output control unit which controls the output of prediction information pertaining to the predicted greenhouse internal environment.
