# HourlyWeatherStatistics A structure that holds a collection of hour weather statistics data. ``` struct HourlyWeatherStatistics where T : Decodable, T : Encodable, T : Equatable, T : Sendable ``` ## Overview Weather statistics for each hour are derived from data for that hour, collected over all years since the baseline start date. ## Topics ### Instance Properties [`var baselineStartDate: Date`](/documentation/WeatherKit/HourlyWeatherStatistics/baselineStartDate) The date when the statistics collection began. [`var endIndex: HourlyWeatherStatistics.Index`](/documentation/WeatherKit/HourlyWeatherStatistics/endIndex) The end index for the hourly weather statistics. [`var hours: [T]`](/documentation/WeatherKit/HourlyWeatherStatistics/hours) An ordered collection of hour weather statistics data of type `T`, for each requested hour. [`var metadata: WeatherMetadata`](/documentation/WeatherKit/HourlyWeatherStatistics/metadata) Descriptive information about the weather statistics data. [`var startIndex: HourlyWeatherStatistics.Index`](/documentation/WeatherKit/HourlyWeatherStatistics/startIndex) The start index for the hourly weather statistics. ### Subscripts [`subscript(HourlyWeatherStatistics.Index) -> HourlyWeatherStatistics.Element`](/documentation/WeatherKit/HourlyWeatherStatistics/subscript(_:)) The hour weather statistics at the provided index. ## Relationships ### Conforms To [`RandomAccessCollection`](/documentation/Swift/RandomAccessCollection) [`Sendable`](/documentation/Swift/Sendable) [`Decodable`](/documentation/Swift/Decodable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Equatable`](/documentation/Swift/Equatable) [`Collection`](/documentation/Swift/Collection) [`Sequence`](/documentation/Swift/Sequence) [`BidirectionalCollection`](/documentation/Swift/BidirectionalCollection) [`Encodable`](/documentation/Swift/Encodable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)