hassio-conf/templates/bath.yaml

---
sensor:
  - name: bath_sensor_air_quality_rating
    unit_of_measurement: ppb
    state: "{{ states('sensor.bath_sensor_air_quality_voc') | float(0) }}"
    icon: >
      {% if states.sensor.bath_sensor_air_quality_voc.state is defined %}
      {% if not is_state('sensor.bath_sensor_air_quality_voc', ['unknown', 'unavailable']) %}
        {% if float(states('sensor.bath_sensor_air_quality_voc')) < 150 %}
          mdi:star-circle
        {% elif float(states('sensor.bath_sensor_air_quality_voc')) >= 150 and float(states('sensor.bath_sensor_air_quality_voc')) < 400 %}
          mdi:star-circle-outline
        {% elif float(states('sensor.bath_sensor_air_quality_voc')) >= 400 and float(states('sensor.bath_sensor_air_quality_voc')) < 1300 %}
          mdi:check-circle-outline
        {% elif float(states('sensor.bath_sensor_air_quality_voc')) >= 1300 and float(states('sensor.bath_sensor_air_quality_voc')) < 4000 %}
          mdi:alert-circle-outline
        {% elif float(states('sensor.bath_sensor_air_quality_voc')) >= 4000 %}
          mdi:radioactive-circle-outline
        {% endif %}
      {% else %}
        mdi:circle-off-outline
      {% endif %}
      {% endif %}