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# HKMetadataKeyWeatherCondition

A key that represents the weather condition during the sample.

```
let HKMetadataKeyWeatherCondition: String
```

## Discussion

This key takes an an <doc://com.apple.documentation/documentation/Foundation/NSNumber> value that contains an [`HKWeatherCondition`](/documentation/HealthKit/HKWeatherCondition) value. Set this key on an [`HKWorkout`](/documentation/HealthKit/HKWorkout) object to represent the overall weather condition during the workout.

## Topics

### Valid Weather Conditions

[`HKWeatherCondition`](/documentation/HealthKit/HKWeatherCondition)

Constants that indicate a type of weather.


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