Observation info is shown on your Dashboard. It updates each time you select or deselect a weather station (or if you receive hourly weather updates as part of an Enthusiast Plan).
On the free Home Plan, observation data does not update like it does with an Enthusiast Plan. It will only display observation info when you first select (or deselect and reselect) a weather station. Once the weather data updates over the course of 24 hours, observations will no longer be displayed. You will then need to use your weather forecast section to view your expected weather for the next three days.