The Nightscout integration allows you to view your CGM data from Nightscout in Home Assistant.


Adding Nightscout to your Home Assistant instance can be done via the user interface, by taking the following steps:

  • Browse to your Home Assistant instance.

  • In the sidebar click on Configuration.

  • From the configuration menu select: Integrations.

  • In the bottom right, click on the Add Integration button.

  • From the list, search and select “Nightscout”.

  • Follow the instruction on screen to complete the set up.

After completing, the Nightscout integration will be immediately available for use.

If your Nightscout instance requires authentication for API access, you are also required to input the API Key in the configuration form.


If you have a sensor session running, and you have enabled the Nightscout integration, you should see a sensor.blood_glucose entity.

The icon changes to indicate the direction or trend, of the glucose readings. The state is the last reading from Nightscout, and you can see other information about the reading in the sensor’s attributes.

Example Automation

- id: "1234567890123"
  alias: "overnight_low_kitchen_lights"
  description: Turn on the lights in the kitchen if my blood sugar drops low overnight
  - platform: numeric_state
    entity_id: sensor.blood_glucose
    below: "65" 
    - condition: time
      after: "22:00:00"
      before: "06:00:00"
    - service: light.turn_on