Sorry if this is a stupid question but I haven't been able to find any information on whether an app can request and receive weatherKit data - the weather - while in the background. My app (AirCompare) makes extensive use of background URL sessions to fetch and process weather data. If certain conditions are met, a notification alert is sent to the user so the user can decide whether to activate the app. For instance if rain is in the forecast, the app alerts the user that they might want to close their windows. Making the app active will execute HomeKit control and accomplish that. Will I be able to replace the background URL session with the appropriate code and be able to fetch weather data in the background?

Hi I upgraded my Mac to test the new os and iOS 17. But I have problems with the weather kit on the app. WeatherKit enabled as app service and capability there was no issue with the iOS 16. What could be the problem? import Foundation import WeatherKit class WeatherKitManager: ObservableObject { @Published var weather: Weather? @Published var isFetchingWeather = false func getWeather(latitude: Double, longitude: Double) async { do { let receivedWeather = try await WeatherService.shared.weather(for: .init(latitude: latitude, longitude: longitude)) DispatchQueue.main.async { self.weather = receivedWeather } } catch { fatalError("\(error)") } } var symbol: String { weather?.currentWeather.symbolName ?? "xmark.app" } var temp: String { if let temp = weather?.currentWeather.temperature.converted(to: .celsius) { let formattedTemp = String(format: "%.1f", temp.value) return "\(formattedTemp)°C" } else { return "Yükleniyor..." } } } Errors here Ceyehat/WeatherKitManager.swift:22: Fatal error: Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" Failed to generate jwt token for: com.apple.weatherkit.authservice with error: Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" Encountered an error when fetching weather data subset; location=<+37.78583400,-122.40641700> +/- 0.00m (speed -1.00 mps / course -1.00) @ 06/06/2023, 5:32:55 PM GMT+03:00, error=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors 2 Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)"

The web app that I work on has been using DarkSky for a few years and we have had historical weather data for many years prior to the date we integrated it. We rely on historical data for accurate reports and data analysis. The issue we are having now is it looks like WeatherKit only supports historical data back to 7/31/2021 which is almost 2 years but much less than DarkSky provided. Is that going to be the official start moving forward or will earlier data be supported eventually?

I am writing an integration with WeatherKit. I need to get several metrics of the Wind data like WindSpeed, windGust. In the CurrentWeatherData object I have all this data. However I also need to have the prediction of this metric slightly into the future. For example I need to get these levels in 5mins intervals from up to 30mins from now. NextHourForecastData seems like the obvious place for this considering it does show Forecasted data everyminute, however only for PrecipitationChance and PrecipitationIntensity. Is there a better dataSet that I can use? In fact I would already be happy to get the maximum during that period. It seems that the HourlyForecast would perhaps also be a solution but as far as I can tell this one is always linked to the start of the hour (i.e. XX:00) which makes it complicated to work with, and not very helpful if I'm making the request at XX:15, etc Alternatively I can get the currentWeather DataSet for multiple timestamps using the currentAsOf parameter. This is a crude approach but from what I can see to do that I would need to do multiple API calls which is rather wasteful and not exactly cheap for multiple systems/locations. Is there perhaps a way to make a call for multiple timestamps and/or locations? Many thanks in advance

I have two related functions to retrieve the weather and then insert it into a "Live Workout Builder"... The first function calls the second to get the weather info after which it inserts the metadata into the builder. public func stopGatheringLocationData() { logger.info("Stopped gathering location data...") Task { let (humidity, temperature) = await getCurrentWeather() if humidity != nil && temperature != nil { logger.log("Current humidity \(humidity!), temperature: \(temperature!)") let metaData = [HKMetadataKeyWeatherHumidity: humidity!, HKMetadataKeyWeatherTemperature: temperature!] logger.log("Current metadata: \(metaData)") do { try await workoutManager.liveBuilder?.addMetadata(metaData) } catch { logger.error("FAILED to add weather metadata to workout -> \(error.localizedDescription)") } } else { logger.error("FAILED to retrieve weather data...") } } locationManager.stopUpdatingLocation() } private func getCurrentWeather() async -> (humidity: HKQuantity?, temperature: HKQuantity?) { // Get the weather for the starting location... let tempUnit = HKUnit.degreeFahrenheit() let humidityUnit = HKUnit.percent() guard let startingLocation else { logger.error("No starting location...") return (nil, nil) } do { let wx = try await wxService.weather(for: startingLocation) let humidity = wx.currentWeather.humidity let temp = wx.currentWeather.temperature.converted(to: .fahrenheit) let curWx = wx.currentWeather let wxAttr = try await wxService.attribution.legalAttributionText await MainActor.run { currentWx = curWx wxServiceAttribution = wxAttr } return (HKQuantity(unit: humidityUnit, doubleValue: humidity), HKQuantity(unit: tempUnit, doubleValue: temp.value)) } catch { logger.error("FAILED to retrieve weather data -> \(error.localizedDescription)") return (nil, nil) } } The two log statements in the first function print out the following information: [Location/Weather] Current humidity 52 %, temperature: 76.226 degF [Location/Weather] Current metadata: ["HKWeatherTemperature": 76.226 degF, "HKWeatherHumidity": 52 %] However, when I look at the workout in the Activity app on my iPhone, the map generated by my app is present but the weather information is missing. The data looks formatted correctly per the limited documentation but for some reason that data is just not showing up. Any help greatly appreciated...

I am using the Weatherkit Rest API successfully for Android. But I noticed that when I create a JSON Web Token with a timestamp for Issued at (iat) which is off by 10 minutes in the future then the Rest API returns 401 not authorized. Well if the time of the users device is off by 10 minutes for some reason then the request will not work. Can someone confirm this? Any solution how to prevent this?

I'm implementing PUSH NOTIFICATIONS for an app that uses Weatherkit ("there is a Tornado outside your house, run!") I enabled the capability, the code in app delegate, tested the push notification with the new apple console. and everything WORKS, BUT...how can I receive push notifications from Weather kit? do they have a webhook that I can listen to? I cannot find anything in the documentation. https://developer.apple.com/documentation/weatherkitrestapi/get_api_v1_weatheralert_language_id or do I need to create a server to call weatherkit every min? I don't understand how to listen to weather kit for alerts. thanks

https://weatherkit.apple.com/api/v1/weather/English/23.0685/72.6535 is the attempt that we are making. Is there anything wrong with the URL /

I am trying to format a measurement in my application as described in this documentation. Notice the example code: let temp = Measurement<UnitTemperature>(value: 38, unit: .celsius) let formattedTemp = temp.formatted(.measurement(width: .wide, usage: .weather, numberFormat: .numeric(precision: .fractionLength(1)))) // For locale: en_US: 100.4 degrees Fahrenheit When I try to do the same, I receive the following errors: Cannot infer contextual base in reference to member 'fractionLength' Cannot infer contextual base in reference to member 'numeric' Extra argument 'numberFormat' in call My code is as follows: Text("\(current.temperature.formatted(.measurement(width: .wide, usage: .weather, numberFormat: .numeric(precision: .fractionLength(1)))))") Where current is a CurrentWeather type provided by WeatherKit. Why is my adherence to the documentation causing these errors?

Hello - migrated from darksky to WeatherKit in April of this year. With some difficulty finally got the REST API to work via the following resources: https://developer.apple.com/weatherkit/get-started/ which is horribly inadequate for JWT instructions. So i also used: https://dev.iachieved.it/iachievedit/weatherkit-rest-api/ which was quite helpful. As stated, in April i managed to get this working. About a week ago it stopped working. The response from my calls are 401 Unauthorized in the header and { "reason": "NOT_ENABLED" } in the body. I believe the key i created expired and thus WeatherKit stopped responding. So i tried to re-enable access using the same Apple key and a new JWT signature. That did not seem to work, so i removed the old key and created a new one. Downloaded the p8 file and used openssl on my ubuntu server to create pem and pub files for the jwt token. Still nothing. I have tried almost all combinations of keys and ID #s in the JWT.io console that i can think of. Importantly, nowhere in the official Apple documentation does it say what parameters the key creation and expiry dates can be. Does the key creation date have to match the date the key was created in Apple Developer Console??? What expiry dates are valid???? No idea. I have submitted a code level request, but they punted me to feedback which apparently does nothing. Still no resolution, nor have i been contacted once by an Apple representative. This is what my $200 developer fee gets me?! Unacceptable. If anyone has any idea on how to resolve this issue and/or create valid jwt tokens easier (via PHP preferably), i'm all ears. Thanks, airyt

Can it be done? I can reliably crash Xcode by attempting the following in a playground: import UIKit import WeatherKit import CoreLocation let sanFrancisco = CLLocation(latitude: 37.7749, longitude: 122.4194) let weatherService = WeatherService() let weather = try await weatherService.weather(for: sanFrancisco) let temperature = weather.currentWeather.temperature print(temperature) Xcode 14.3.1 macOS 13.4.1

What is the highest level of location precision achievable with the WeatherKit API? When latitude and longitude are given up to the fifth decimal place, the precision is around 1 meter. Could this ever be more accurate than providing the lat/long to the fourth decimal place, which has a precision of about 10 meters?

Could somebody please point me to the project download mentioned in Novall Khan’s “Meet Weatherkit” presentation? I’d additionally or alternatively be interested in any working examples for using the rest API, eg in Python, to access Weatherki. thanks, Rob

I've received a forecast with non-zero precipitationChance and zero precipitationIntensity. Is this expected? How should I interpret the data? { "forecastStart": "2023-09-02T02:00:00Z", "cloudCover": 0.55, "conditionCode": "PartlyCloudy", "daylight": false, "humidity": 0.92, "precipitationAmount": 0, "precipitationIntensity": 0, "precipitationChance": 0.31, "precipitationType": "clear", "pressure": 1017.56, "pressureTrend": "steady", "snowfallIntensity": 0, "snowfallAmount": 0, "temperature": 12.56, "temperatureApparent": 12.22, "temperatureDewPoint": 11.26, "uvIndex": 0, "visibility": 23505.2, "windDirection": 233, "windGust": 6.17, "windSpeed": 2.82 }

System status shows WeatherKit as available, but currently all calls returns status 401 with the response body containing {"reason": "NOT_ENABLED"}. We have been running the exact same code in production since March 2023. Nothing changed. The system just started returning errors. Is that happening for anyone else?

My app has been using WeatherKit via its REST API for months with success. Suddenly, the weatherkit API only returns to me "reason" : "NOT_ENABLED" now. I am unsure why it is suddenly telling me WeatherKit is not enabled?

Hi, We have been using DarkSky's API for a few years now and we've always been able to pull data for at least 3 years prior to the current date. With WeatherKit, we are seeing that data is only available for the last 2 years. I've seen a few posts confirming this, but I'm curious if we will always be limited to 2 years of data or if this is a temporary situation and as time goes on, WeatherKit will have more and more historical data available? Another way to put it is will Apple always delete any data older than 2 years or will they start to build up an archive so in 10 years from now, they will have 12 total years of data (given they have 2 years right now). Thanks!

I created my own service to generate a JWT for WeatherKit. When I use this JWT in Postman it works as expected. However, if I use it in my React application I get a 403 CORS pre-flight check error. What this essentially means is by nature, Safari - before doing the GET call with Authorization header - it does a preflight check OPTIONS call without headers, to check if the service will accept the request. Unfortunately this generates a 403 error instead of an 200, so the GET Call with Authorization header cannot be made. Is this by design to prevent webfrontends from accessing the API or is this a bug I encountered? Thank you!

This is a app for weather in which i used weatherkit.I have added "privacy - Location when in Usage Description in info of project and also enabled location in features of simulator to Apple.After doing all this ,still the permission message for location is not appearing in app in simulator.Following is my code: import CoreLocation import UIKit //final means this class will not be subclassed final class ViewController: UIViewController, CLLocationManagerDelegate { let locationManager = CLLocationManager() //to access weather data let service = WeatherService() override func viewDidLoad() { super.viewDidLoad() setupView() getUserLocation() } func getUserLocation(){ locationManager.delegate = self locationManager.requestWhenInUseAuthorization() locationManager.startUpdatingLocation() } func getWeather(location : CLLocation){ //asynchoronus task Task { do { //if it throws error //await tells to wait until function gives results let result = try await service.weather(for: location) print("Current : "+String(describing: result.currentWeather)) print("Daily : "+String(describing: result.dailyForecast)) print("Hourly : "+String(describing: result.hourlyForecast)) } catch { //it will be excecuted print(error.localizedDescription) } } } func setupView(){ } func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { guard let location = locations.first else { return } locationManager.stopUpdatingLocation() getWeather(location: location) } func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) { switch status { case .denied: print("location permission denied") case .authorizedWhenInUse, .authorizedAlways : manager.startUpdatingLocation() print("Location Permission Granted") case .notDetermined : print("location Permission not determined") default: break } } }