Weather is a

weather forecast Weather forecasting is the application of science and technology to predict the conditions of the atmosphere for a given location and time. People have attempted to predict the weather informally for millennia and formally since the 19th centu ...

app developed by

Apple Inc. Apple Inc. is an American multinational technology company headquartered in Cupertino, California, United States. Apple is the largest technology company by revenue (totaling in 2021) and, as of June 2022, is the world's biggest company ...

, available on

iOS iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that powers many of the company's mobile devices, including the iPhone; the term also includes ...

since the release of the iPhone and

iPhone OS 1 iPhone OS 1, commonly referred to as iOS 1, is the first major release of iOS, Apple's mobile operating system. No official name was given on its initial release; Apple marketing literature simply stated that the iPhone runs a version of Appl ...

in 2007. It allows users to see the conditions, forecast, temperature, and other related metrics of the device's current location, as well as a number of other cities. A version of Weather is also available for

watchOS watchOS is the operating system of the Apple Watch, developed by Apple Inc. It is based on iOS, the operating system used by the iPhone, and has many similar features. It was released on April 24, 2015, along with the Apple Watch, the only dev ...

; however, it is limited in functionality. Weather was made available on more devices across the Apple ecosystem with the releases of

iPadOS 16 iPadOS 16 is the fourth and current major release of the iPadOS operating system developed by Apple for its iPad line of tablet computers. The successor to iPadOS 15, it was announced at the company's Worldwide Developers Conference (WWDC) on ...

and

macOS Ventura macOS Ventura (version 13) is the nineteenth and current major release of macOS, Apple's desktop operating system for Mac computers. The successor to macOS Monterey, it was announced at WWDC 2022 on June 6, 2022, and launched on October 24, 2 ...

, where weather data from Apple was previously only available as a widget or through

Siri Siri ( ) is a virtual assistant that is part of Apple Inc.'s iOS, iPadOS, watchOS, macOS, tvOS, and audioOS operating systems. It uses voice queries, gesture based control, focus-tracking and a natural-language user interface to answer questio ...

. Earlier versions of Weather up through the release of

iOS 7 iOS 7 is the seventh major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 6. It was announced at the company's Worldwide Developers Conference on June 10, 2013, and was released on September 18 o ...

sourced the app's forecast data from Yahoo! Weather; in March 2019, Yahoo! shut down the servers distributing data for the Weather app on devices supporting iOS 7 and earlier operating systems. From

iOS 8 iOS 8 is the eighth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 7. It was announced at the company's Worldwide Developers Conference on June 2, 2014, and was released on September 17, ...

to iOS 15,

The Weather Channel The Weather Channel (TWC) is an American pay television channel owned by Weather Group, LLC, a subsidiary of Allen Media Group. The channel's headquarters are in Atlanta, Georgia. Launched on May 2, 1982, the channel broadcasts weather forecas ...

was used as the app's weather data source. Since

iOS 16 iOS 16 is the 16th and current major release of the iOS mobile operating system developed by Apple for its iPhone line of products. It was announced at the company's Worldwide Developers Conference (WWDC) on June 6, 2022, as the successor to ...

, Apple has used their own internal forecast data. Following the acquisition of weather app Dark Sky, many features have been rolled into Apple's own Weather app with the release of iOS 15. Support for Dark Sky will cease after January 1, 2023, with users being urged to migrate to the Weather app.

Functionality

Locations can be added or removed by pressing the list icon in the bottom right corner of the application, which allows the user to type in the city's name, ZIP Code or postal code or airport code. For each city, the app will display the current, highest, and lowest temperatures, a 10-day forecast,

UV index The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn-producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the general ...

, time of sunrise and sunset, current wind direction and speed, rainfall measurements, current humidity, outdoor visibility range, and barometric pressure. In some locations, the app will also display an air quality report and show next-hour precipitation when raining or snowing.

iOS 14 iOS 14 is the fourteenth major release of the iOS mobile operating system developed by Apple Inc. for their iPhone and iPod Touch lines. Announced at the company's Worldwide Developers Conference on June 22, 2020 as the successor to iOS 13 ...

introduced support for severe weather warnings, allowing a user to receive notifications for government-issued severe weather events such as tornadoes, flash flooding, strong winds, and snow storms. With iOS 15, a

weather map A weather map, also known as synoptic weather chart, displays various meteorological features across a particular area at a particular point in time and has various symbols which all have specific meanings. Such maps have been in use since the m ...

can be accessed from the bottom left of the application which can display the temperature, air quality, and a multi-day precipitation forecast.

Inability to display 69°

In July 2021, some testers of the iOS 15 beta software noticed that the Weather app avoided displaying an accurate temperature when it was . Former Apple developer João Pavão speculated that the app uses whole numbers in

Celsius The degree Celsius is the unit of temperature on the Celsius scale (originally known as the centigrade scale outside Sweden), one of two temperature scales used in the International System of Units (SI), the other being the Kelvin scale. The ...

for the temperature data, later converting it to

Fahrenheit The Fahrenheit scale () is a temperature scale based on one proposed in 1724 by the physicist Daniel Gabriel Fahrenheit (1686–1736). It uses the degree Fahrenheit (symbol: °F) as the unit. Several accounts of how he originally defined his ...

for the user interface and thus making it impossible for any number that was not the result of the conversion to be displayed.

WeatherKit API

WeatherKit is an API integration which provides third-party developers access to Apple Weather information, replacing the former Dark Sky API. Developers can make a limited number of 500,000 API requests per month for free, with subscription options available to increase the request limit.

References

{{IOS IOS IOS-based software made by Apple Inc. Apple Inc. software Graphic software in meteorology The Weather Channel