GA4 Dimensions & Metrics Explorer

Hour hour

Two-digit hour of day (00–23) the event was logged, in the property time zone.

Type
Dimension
Scope
Time
Category
Time
API name
hour

Compatibility

Likely compatible (scope-based estimate — run fetch_metadata.py for Google's exact matrix):

DatedateDay of weekdayOfWeekCountrycountryCitycityDevice categorydeviceCategoryOperating systemoperatingSystemBrowserbrowserLanguagelanguageSession default channel groupsessionDefaultChannelGroupSession sourcesessionSourceSession mediumsessionMediumSession source / mediumsessionSourceMediumSession campaignsessionCampaignNameFirst user default channel groupfirstUserDefaultChannelGroupPage pathpagePathPage path + query stringpagePathPlusQueryStringPage titlepageTitleLanding pagelandingPageHostnamehostNameEvent nameeventNameNew / returningnewVsReturningAudience nameaudienceNameActive usersactiveUsersNew usersnewUsersTotal userstotalUsersSessionssessionsEngaged sessionsengagedSessionsEngagement rateengagementRateAverage session durationaverageSessionDurationBounce ratebounceRateViewsscreenPageViewsViews per sessionscreenPageViewsPerSessionEvent counteventCountEvent count per usereventCountPerUserConversionsconversionsKey eventskeyEventsUser engagementuserEngagementDurationTotal revenuetotalRevenueTransactionstransactions

Watch out combining it with: Cohort, Cohort nth day — these can raise incompatible dimensions and metrics.