home_assistant_aqi_calc.yaml

# AQI Calculation from https://www.airnow.gov/sites/default/files/2020-05/aqi-technical-assistance-document-sept2018.pdf p14
# And updated by https://www.epa.gov/system/files/documents/2024-02/pm-naaqs-air-quality-index-fact-sheet.pdf
# This also shows how to use references in HA's templating language to include this on other PM2.5 sensors
  - name: "Nursery AQI"
    attributes:
      particulates: "{{ states('sensor.pm2_5_2') }}"
    unique_id: "sensor.nursery_aqi"
    <<: &aqi_from_pm25
      unit_of_measurement: "aqi"
      icon: mdi:blur
      state: >
        {% set pm = ((this.attributes.particulates| default(-1, false)) | float) %}
        {% if pm <= 9.0 %}
          {% set low = 0.0 %}
          {% set high = 50.0 %}
          {% set lowpm = 0.0 %}
          {% set highpm = 9.0 %}
        {% elif pm <= 35.4 %}
          {% set low = 50.0 %}
          {% set high = 100.0 %}
          {% set lowpm = 9.1 %}
          {% set highpm = 35.4 %}
        {% elif pm <= 55.4 %}
          {% set low = 101.0 %}
          {% set high = 150.0 %}
          {% set lowpm = 35.5 %}
          {% set highpm = 55.4 %}
        {% elif pm <= 125.4 %}
          {% set low = 151.0 %}
          {% set high = 200.0 %}
          {% set lowpm = 55.5 %}
          {% set highpm = 125.4 %}
        {% elif pm <= 225.4 %}
          {% set low = 201.0 %}
          {% set high = 300.0 %}
          {% set lowpm = 125.5 %}
          {% set highpm = 225.4 %}
        {% else %}
          {% set low = 301.0 %}
          {% set high = 500.0 %}
          {% set lowpm = 225.5 %}
          {% set highpm = 500.0 %}
        {% endif %}
        {% set i_diff = high-low %}
        {% set pm_diff = highpm-lowpm %}
        {% set conc = pm-lowpm %}
        {% if pm == -1.0 %}
          {{ -1 }}
        {% else %}
          {{ ((conc * ((i_diff) / pm_diff)) + low) | round(0) }}
        {% endif %}
  - name: "Family Room AQI"
    unique_id: "sensor.family_room_aqi"
    <<: *aqi_from_pm25
    attributes:
      particulates: "{{ states('sensor.ikea_of_sweden_vindstyrka_particulate_matter_2') }}"
  - name: "Living Room AQI"
    unique_id: "sensor.living_room_aqi"
    <<: *aqi_from_pm25
    attributes:
      particulates: "{{ states('sensor.ikea_of_sweden_vindstyrka_particulate_matter') }}"