Weather apps are mobile or web-based applications that provide users with current and forecasted weather information. These apps can use data from various sources, such as government meteorological agencies, private weather services, and user-generated reports, to provide users with detailed information such as temperature, precipitation, wind speed, and air quality. Weather apps can also provide users with alerts for severe weather conditions and offer personalised features such as location-based weather updates and the ability to add multiple locations. Examples of popular weather apps include AccuWeather, The Weather Channel, and Weather Underground.