This project will demonstrate the capabilities of Unreal Engine for simulating real-time weather conditions using data retrieved from the Open Weather server via their API. It will explain what Unreal Engine is and its use. The functionality of the VaRest plugin, which exclusively handles communication between the client and the service, will be described. The online service Open Weather Map and how it assists in the creation of this simulation will also be explained. The process of creating the simulation will consist of project creation in Unreal Engine, how the environment in which the simulation will take place is modeled, and how to create a data table and the necessary data within it to display weather conditions. The data in the table will display different types of variables, such as numbers, sounds, or particle systems. Each type of variable will be further explained, focusing on how it affects the display of weather phenomena. The process of creating a particle system and new parameters that will influence the space in the simulation will also be shown. Afterward, the simulation logic will be developed within the Blueprint visual scripting system. Blueprint is a visual scripting tool that allows users to implement complex logic and interactions within Unreal Engine. Along with Blueprint and the integration of the VaRest plugin, communication with the Open Weather Map service will be established to retrieve data from the Open Weather server. The returned information will fetch the appropriate data from the table to display the current weather conditions. In addition to displaying the current weather, the project will also be able to present some options that can be simulated. An interface will be created through which different weather conditions, both simulated by the application and retrieved from the Open Weather Map service, can be selected. When the application is launched, it will automatically retrieve data via the API, and from the table where all parameters for the simulation display are defined, it will fetch a specific set of parameters by ID and display them in the scene. Through the interface, the user will be able to choose how certain weather conditions are displayed or select to load and display data from the service.