WeatherKit

Fetch current conditions, hourly and daily forecasts, weather alerts, and historical statistics using WeatherService. Display required Apple Weather attribution.

Contents

• Setup
• Fetching Current Weather
• Forecasts
• Weather Alerts
• Selective Queries
• Context Queries
• Attribution
• Availability
• Common Mistakes
• Review Checklist
• References

Setup

Project Configuration

1. Enable the WeatherKit capability in Xcode (adds the entitlement)
2. Enable WeatherKit for your App ID in the Apple Developer portal
3. Add NSLocationWhenInUseUsageDescription to Info.plist if using device location
4. WeatherKit requires an active Apple Developer Program membership

Import

import WeatherKit
import CoreLocation

Creating the Service

Use the shared singleton or create an instance. WeatherService conforms to Sendable; keep app cache and UI state isolated separately.

let weatherService = WeatherService.shared
// or
let weatherService = WeatherService()

Fetching Current Weather

Fetch current conditions for a location. Returns a Weather object with all available datasets.

WeatherKit temperatures are Measurement<UnitTemperature> values; display them with .formatted() so units and number formatting follow the user's locale.

func fetchCurrentWeather(for location: CLLocation) async throws -> CurrentWeather {
    let weather = try await weatherService.weather(for: location)
    return weather.currentWeather
}