indoor-aqi-home-assistant/

[utterances-bot]

Adding PM2.5-based Indoor AQI to Home Assistant

Add indoor AQI to your Home Assistant instance with an existing PM2.5 sensor.

https://blog.horner.tj/indoor-aqi-home-assistant/

[indothai]

Thanks! How are you able to separate the Outdoor and Indoor AQI measurements?

[tjhorner]

The outdoor AQI comes from a separate integration, like AirNow.

If you're asking about how to visually separate them on the dashboard, you can use a Horizontal Stack card with two gauges.

[indothai]

I mean, I've got 2 sensors (indoor and outdoor). I can get 1 working but when I try to put 2 and modify the code (entity_id) it doesn't work.

[indothai]

This is what I have in my configuration.yaml file.

sensor:

  - platform: statistics
    unique_id: pm25_24hr_avg
    name: "Outdoor PM2.5 24-hour Average"
    entity_id: sensor.particulate_matter_2_5um_concentration
    state_characteristic: mean
    sampling_size: 15000
    max_age:
      hours: 24

  - platform: statistics
    unique_id: pm25_24hr_avg
    name: "Indoor PM2.5 24-hour Average"
    entity_id: sensor.wellbeing_pure_a9_mu_pm2_5
    state_characteristic: mean
    sampling_size: 15000
    max_age:
      hours: 24

template:
  - sensor:
      - name: "Outdoor AQI"
        unique_id: outdoor_aqi
        state_class: measurement
        device_class: aqi
        unit_of_measurement: AQI
        state: >
          {% macro aqi(val, val_l, val_h, aqi_l, aqi_h) -%}
            {{(((aqi_h-aqi_l)/(val_h - val_l) * (val - val_l)) + aqi_l)|round(0)}}
          {%- endmacro %}
          {% set v = states('sensor.pm2_5_24_hour_average')|round(1) %}
          {% if v <= 12.0 %}
            {{aqi(v, 0, 12.0, 0, 50)}}
          {% elif 12.0 < v <= 35.4 %}
            {{aqi(v, 12.1, 35.4, 51, 100)}}
          {% elif 35.4 < v <= 55.4 %}
            {{aqi(v, 35.5, 55.4, 101, 150)}}
          {% elif 55.4 < v <= 150.5 %}
            {{aqi(v, 55.5, 150.4, 151, 200)}}
          {% elif 150.4 < v <= 250.4 %}
            {{aqi(v, 150.4, 250.4, 201, 300)}}
          {% elif 250.5 < v <= 500.4 %}
            {{aqi(v, 250.5, 500.4, 301, 500)}}
          {% else %}
            500
          {% endif %}

      - name: "Indoor AQI"
        unique_id: indoor_aqi
        state_class: measurement
        device_class: aqi
        unit_of_measurement: AQI
        state: >
          {% macro aqi(val, val_l, val_h, aqi_l, aqi_h) -%}
            {{(((aqi_h-aqi_l)/(val_h - val_l) * (val - val_l)) + aqi_l)|round(0)}}
          {%- endmacro %}
          {% set v = states('sensor.pm2_5_24_hour_average')|round(1) %}
          {% if v <= 12.0 %}
            {{aqi(v, 0, 12.0, 0, 50)}}
          {% elif 12.0 < v <= 35.4 %}
            {{aqi(v, 12.1, 35.4, 51, 100)}}
          {% elif 35.4 < v <= 55.4 %}
            {{aqi(v, 35.5, 55.4, 101, 150)}}
          {% elif 55.4 < v <= 150.5 %}
            {{aqi(v, 55.5, 150.4, 151, 200)}}
          {% elif 150.4 < v <= 250.4 %}
            {{aqi(v, 150.4, 250.4, 201, 300)}}
          {% elif 250.5 < v <= 500.4 %}
            {{aqi(v, 250.5, 500.4, 301, 500)}}
          {% else %}
            500
          {% endif %}

[tjhorner]

You need to change the unique_id for one of the pm25_24hr_avg statistics entities