From 9c6656138136cfd9adc72be8bc0bb835d1d3bbba Mon Sep 17 00:00:00 2001
From: Thomas55555 <59625598+Thomas55555@users.noreply.github.com>
Date: Tue, 13 Jan 2026 20:28:41 +0100
Subject: [PATCH] Make pollutants dynamic in Google Air Quality (#160747)

---
 homeassistant/components/google_air_quality/sensor.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/homeassistant/components/google_air_quality/sensor.py b/homeassistant/components/google_air_quality/sensor.py
index d15dc63d3c3..7d58c9a2627 100644
--- a/homeassistant/components/google_air_quality/sensor.py
+++ b/homeassistant/components/google_air_quality/sensor.py
@@ -112,6 +112,7 @@ AIR_QUALITY_SENSOR_TYPES: tuple[AirQualitySensorEntityDescription, ...] = (
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.CO,
         native_unit_of_measurement_fn=lambda x: x.pollutants.co.concentration.units,
+        exists_fn=lambda x: "co" in {p.code for p in x.pollutants},
         value_fn=lambda x: x.pollutants.co.concentration.value,
     ),
     AirQualitySensorEntityDescription(
@@ -143,6 +144,7 @@ AIR_QUALITY_SENSOR_TYPES: tuple[AirQualitySensorEntityDescription, ...] = (
         translation_key="nitrogen_dioxide",
         state_class=SensorStateClass.MEASUREMENT,
         native_unit_of_measurement_fn=lambda x: x.pollutants.no2.concentration.units,
+        exists_fn=lambda x: "no2" in {p.code for p in x.pollutants},
         value_fn=lambda x: x.pollutants.no2.concentration.value,
     ),
     AirQualitySensorEntityDescription(
@@ -150,6 +152,7 @@ AIR_QUALITY_SENSOR_TYPES: tuple[AirQualitySensorEntityDescription, ...] = (
         translation_key="ozone",
         state_class=SensorStateClass.MEASUREMENT,
         native_unit_of_measurement_fn=lambda x: x.pollutants.o3.concentration.units,
+        exists_fn=lambda x: "o3" in {p.code for p in x.pollutants},
         value_fn=lambda x: x.pollutants.o3.concentration.value,
     ),
     AirQualitySensorEntityDescription(
@@ -157,6 +160,7 @@ AIR_QUALITY_SENSOR_TYPES: tuple[AirQualitySensorEntityDescription, ...] = (
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.PM10,
         native_unit_of_measurement_fn=lambda x: x.pollutants.pm10.concentration.units,
+        exists_fn=lambda x: "pm10" in {p.code for p in x.pollutants},
         value_fn=lambda x: x.pollutants.pm10.concentration.value,
     ),
     AirQualitySensorEntityDescription(
@@ -164,6 +168,7 @@ AIR_QUALITY_SENSOR_TYPES: tuple[AirQualitySensorEntityDescription, ...] = (
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.PM25,
         native_unit_of_measurement_fn=lambda x: x.pollutants.pm25.concentration.units,
+        exists_fn=lambda x: "pm25" in {p.code for p in x.pollutants},
         value_fn=lambda x: x.pollutants.pm25.concentration.value,
     ),
     AirQualitySensorEntityDescription(
@@ -171,6 +176,7 @@ AIR_QUALITY_SENSOR_TYPES: tuple[AirQualitySensorEntityDescription, ...] = (
         translation_key="sulphur_dioxide",
         state_class=SensorStateClass.MEASUREMENT,
         native_unit_of_measurement_fn=lambda x: x.pollutants.so2.concentration.units,
+        exists_fn=lambda x: "so2" in {p.code for p in x.pollutants},
         value_fn=lambda x: x.pollutants.so2.concentration.value,
     ),
 )