luftdaten_quality

gistfile1.txt

Sensors created in HASS
- sensor.luftdaten_pm10
- sensor.luftdaten_pm25

##HASS template:
## Calculate AirQUality:
##        average percentage of values below thesholds defined by WHO
##        <=40% -> EXCELLENT
##        <=60% -> GOOD
##        <=80% -> FAIR
##        <=100% -> INFERIOR
##        >100% -> POOR Since poor quality can be used as a trigger.

value_pm10: '{{ (sensor.luftdaten_pm10/50) | float(2) }}?

##Code from homebridge

// Calculate AirQUality:
      //  average percentage of values below thesholds defined by WHO
      //  <=40% -> EXCELLENT
      //  <=60% -> GOOD
      //  <=80% -> FAIR
      //  <=100% -> INFERIOR
      //  >100% -> POOR Since poor quality can be used as a trigger.
      if (pm10 && pm25) {
        // PM10: 50 µg/m³ daily limit
        let percentPm10 = parseFloat(pm10) / 50.0;
        // PM2.5: 25 µg/m³ daily limit
        let percentPm25 = parseFloat(pm25) / 25.0;
        let qualityPercentage = (percentPm10 + percentPm25) / 2.0;

        let absChange = Math.abs(this.qualityPercentage - qualityPercentage);
        let wasNotSet = this.qualityPercentage == undefined || this.qualityPercentage == null;
        this.qualityPercentage = qualityPercentage;
        // Only set new quality level if there was a significant change
        if (wasNotSet || absChange >= 0.05) {
          if (qualityPercentage <= 0.4) {
            this.airQuality = Characteristic.AirQuality.EXCELLENT;
          } else if (qualityPercentage <= 0.6) {
            this.airQuality = Characteristic.AirQuality.GOOD;
          } else if (qualityPercentage <= 0.8) {
            this.airQuality = Characteristic.AirQuality.FAIR;
          } else if (qualityPercentage <= 1.0) {
            this.airQuality = Characteristic.AirQuality.INFERIOR;
          } else if (qualityPercentage > 1.0) {
            this.airQuality = Characteristic.AirQuality.POOR;
          } else {
            this.airQuality = Characteristic.AirQuality.UNKNOWN;
          }
          this.airQualityService.setCharacteristic(
            Characteristic.AirQuality,
            this.airQuality