Custom template to pull attribute

Configuration
1

I am trying to grab the outside humidity from the weather.forecast_home entity but I cant get it to work. I just want to pull an attribute in to its own sensor and have been battling for a little while looking at various bits of code.

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I can get it to grab the number as an attribute (as above) although I need it to be classed as a humidity sensor and show the number as the state so I can report on it in grafana

template:
  - trigger:
      - platform: time_pattern
        minutes: /1
    action:
      - service: weather.get_forecasts
        data:
          type: hourly
        target:
          entity_id: weather.forecast_home
        response_variable: hourly
    sensor:
      - name: AA Humidity
        #state_class: measurement
        #unit_of_measurement: "%"
        #device_class: "humidity"
        #unique_id: weather_forecast_hourly

        state: "{{ now().isoformat() }}"
        attributes:
          humidity: "{{ state_attr('weather.forecast_home', 'humidity')}}"

This is what I have so far and of course commented out the bits that I think I need but they just don’t work either resulting in nothing being pulled or the sensor dissapearing.

many thanks
Stu

2

You are setting the state as the current datetime which cannot therefore be %. Your state should be your humidity value and then your commented out bits will work.

Also, you dont need the trigger as a template sensor will update if the senaor on which it is based updates.

As such, your template sensor should be…

template:
  - sensor:
      - name: AA Humidity
        state_class: measurement
        unit_of_measurement: "%"
        device_class: "humidity"
        unique_id: weather_forecast_hourly
        state: state_attr('weather.forecast_home', 'humidity')}}"

Edit: if you do need to trigger the weather service to update its sensors, then add your trigger and action back

1 Like
3

Correction:

        state: "{{ state_attr('weather.forecast_home', 'humidity') }}"
1 Like
4

Sorry, yes. Typing on my phone!

5

Thank you all for the help - seems to be working!