diff --git a/homeassistant/components/google_air_quality/icons.json b/homeassistant/components/google_air_quality/icons.json
index b3f3370b0b8..5c464c1d408 100644
--- a/homeassistant/components/google_air_quality/icons.json
+++ b/homeassistant/components/google_air_quality/icons.json
@@ -12,9 +12,6 @@
       },
       "non_methane_hydrocarbons": {
         "default": "mdi:molecule"
-      },
-      "ozone": {
-        "default": "mdi:molecule"
       }
     }
   }
diff --git a/homeassistant/components/google_air_quality/sensor.py b/homeassistant/components/google_air_quality/sensor.py
index ac384aa3ff5..fe3f3be8986 100644
--- a/homeassistant/components/google_air_quality/sensor.py
+++ b/homeassistant/components/google_air_quality/sensor.py
@@ -154,8 +154,8 @@ AIR_QUALITY_SENSOR_TYPES: tuple[AirQualitySensorEntityDescription, ...] = (
     ),
     AirQualitySensorEntityDescription(
         key="o3",
-        translation_key="ozone",
         state_class=SensorStateClass.MEASUREMENT,
+        device_class=SensorDeviceClass.OZONE,
         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,
diff --git a/homeassistant/components/google_air_quality/strings.json b/homeassistant/components/google_air_quality/strings.json
index 8ca0dfcef98..48f9a2d4601 100644
--- a/homeassistant/components/google_air_quality/strings.json
+++ b/homeassistant/components/google_air_quality/strings.json
@@ -211,9 +211,6 @@
       "non_methane_hydrocarbons": {
         "name": "Non-methane hydrocarbons"
       },
-      "ozone": {
-        "name": "[%key:component::sensor::entity_component::ozone::name%]"
-      },
       "uaqi": {
         "name": "Universal Air Quality Index"
       },
diff --git a/tests/components/google_air_quality/snapshots/test_sensor.ambr b/tests/components/google_air_quality/snapshots/test_sensor.ambr
index 05e085e79f1..c5bd5c08b7c 100644
--- a/tests/components/google_air_quality/snapshots/test_sensor.ambr
+++ b/tests/components/google_air_quality/snapshots/test_sensor.ambr
@@ -484,14 +484,14 @@
     'object_id_base': 'Ozone',
     'options': dict({
     }),
-    'original_device_class': None,
+    'original_device_class': <SensorDeviceClass.OZONE: 'ozone'>,
     'original_icon': None,
     'original_name': 'Ozone',
     'platform': 'google_air_quality',
     'previous_unique_id': None,
     'suggested_object_id': None,
     'supported_features': 0,
-    'translation_key': 'ozone',
+    'translation_key': None,
     'unique_id': 'o3_10.1_20.1',
     'unit_of_measurement': 'ppb',
   })
@@ -500,6 +500,7 @@
   StateSnapshot({
     'attributes': ReadOnlyDict({
       'attribution': 'Data provided by Google Air Quality',
+      'device_class': 'ozone',
       'friendly_name': 'Home Ozone',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
       'unit_of_measurement': 'ppb',