diff --git a/homeassistant/components/matter/sensor.py b/homeassistant/components/matter/sensor.py
index 1f9d2742325..ac24ab76724 100644
--- a/homeassistant/components/matter/sensor.py
+++ b/homeassistant/components/matter/sensor.py
@@ -722,8 +722,8 @@ DISCOVERY_SCHEMAS = [
         platform=Platform.SENSOR,
         entity_description=MatterSensorEntityDescription(
             key="NitrogenDioxideSensor",
-            translation_key="nitrogen_dioxide",
             native_unit_of_measurement=CONCENTRATION_PARTS_PER_MILLION,
+            device_class=SensorDeviceClass.NITROGEN_DIOXIDE,
             state_class=SensorStateClass.MEASUREMENT,
         ),
         entity_class=MatterSensor,
diff --git a/tests/components/matter/snapshots/test_sensor.ambr b/tests/components/matter/snapshots/test_sensor.ambr
index 054ac6aaae5..c1a47bf30a1 100644
--- a/tests/components/matter/snapshots/test_sensor.ambr
+++ b/tests/components/matter/snapshots/test_sensor.ambr
@@ -200,14 +200,14 @@
     'object_id_base': 'Nitrogen dioxide',
     'options': dict({
     }),
-    'original_device_class': None,
+    'original_device_class': <SensorDeviceClass.NITROGEN_DIOXIDE: 'nitrogen_dioxide'>,
     'original_icon': None,
     'original_name': 'Nitrogen dioxide',
     'platform': 'matter',
     'previous_unique_id': None,
     'suggested_object_id': None,
     'supported_features': 0,
-    'translation_key': 'nitrogen_dioxide',
+    'translation_key': None,
     'unique_id': '00000000000004D2-0000000000000001-MatterNodeDevice-1-NitrogenDioxideSensor-1043-0',
     'unit_of_measurement': 'ppm',
   })
@@ -215,6 +215,7 @@
 # name: test_sensors[air_quality_sensor][sensor.lightfi_aq1_air_quality_sensor_nitrogen_dioxide-state]
   StateSnapshot({
     'attributes': ReadOnlyDict({
+      'device_class': 'nitrogen_dioxide',
       'friendly_name': 'lightfi-aq1-air-quality-sensor Nitrogen dioxide',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
       'unit_of_measurement': 'ppm',
@@ -7544,14 +7545,14 @@
     'object_id_base': 'Nitrogen dioxide',
     'options': dict({
     }),
-    'original_device_class': None,
+    'original_device_class': <SensorDeviceClass.NITROGEN_DIOXIDE: 'nitrogen_dioxide'>,
     'original_icon': None,
     'original_name': 'Nitrogen dioxide',
     'platform': 'matter',
     'previous_unique_id': None,
     'suggested_object_id': None,
     'supported_features': 0,
-    'translation_key': 'nitrogen_dioxide',
+    'translation_key': None,
     'unique_id': '00000000000004D2-000000000000008F-MatterNodeDevice-2-NitrogenDioxideSensor-1043-0',
     'unit_of_measurement': 'ppm',
   })
@@ -7559,6 +7560,7 @@
 # name: test_sensors[mock_air_purifier][sensor.mock_air_purifier_nitrogen_dioxide-state]
   StateSnapshot({
     'attributes': ReadOnlyDict({
+      'device_class': 'nitrogen_dioxide',
       'friendly_name': 'Mock Air Purifier Nitrogen dioxide',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
       'unit_of_measurement': 'ppm',
diff --git a/tests/components/matter/test_sensor.py b/tests/components/matter/test_sensor.py
index 38ae3749fdd..1b9768e54c5 100644
--- a/tests/components/matter/test_sensor.py
+++ b/tests/components/matter/test_sensor.py
@@ -310,6 +310,19 @@ async def test_air_quality_sensor(
     assert state
     assert state.state == "789.0"
 
+    # Nitrogen Dioxide
+    state = hass.states.get("sensor.lightfi_aq1_air_quality_sensor_nitrogen_dioxide")
+    assert state
+    assert state.state == "0.0"
+    assert state.attributes["device_class"] == "nitrogen_dioxide"
+
+    set_node_attribute(matter_node, 1, 1043, 0, 12.5)
+    await trigger_subscription_callback(hass, matter_client)
+
+    state = hass.states.get("sensor.lightfi_aq1_air_quality_sensor_nitrogen_dioxide")
+    assert state
+    assert state.state == "12.5"
+
     # PM1
     state = hass.states.get("sensor.lightfi_aq1_air_quality_sensor_pm1")
     assert state