The Salesforce1 downloadable apps now automatically cache a user’s five most recently accessed dashboards. This includes dashboards viewed in the full Salesforce site, as well as in Salesforce1. For these dashboards, the view page is available offline but not the single-component view. In addition, other dashboards that a user views during a Salesforce1 session are also stored for offline viewing.
Previously viewed Salesforce events are available offline too.
On the main Today view, the Current Event and Agenda cards are automatically cached but none of the other cards are available offline. Individual mobile events are available if viewed before going offline.
For details about the complete set of Salesforce data that’s available when offline, see “Configure Offline Access to Salesforce1” in the Salesforce Help.