Change the Dashboard Refresh Interval
You can change how often the dashboard data is refreshed.
To change the dashboard refresh interval
Open the CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
In the navigation pane, choose Dashboards.
On the Refresh options menu (upper right corner of the console), do one of the following:
To automatically refresh the dashboard, select Auto refresh.
To change the refresh interval, under Refresh interval, choose 1, 2, 5, or 15 minutes.