diff --git a/homeassistant/components/airly/const.py b/homeassistant/components/airly/const.py
index e6b87db6f15..79004abbe41 100644
--- a/homeassistant/components/airly/const.py
+++ b/homeassistant/components/airly/const.py
@@ -6,7 +6,11 @@ from typing import Final
 from homeassistant.components.sensor import STATE_CLASS_MEASUREMENT
 from homeassistant.const import (
     CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+    DEVICE_CLASS_AQI,
     DEVICE_CLASS_HUMIDITY,
+    DEVICE_CLASS_PM1,
+    DEVICE_CLASS_PM10,
+    DEVICE_CLASS_PM25,
     DEVICE_CLASS_PRESSURE,
     DEVICE_CLASS_TEMPERATURE,
     PERCENTAGE,
@@ -49,26 +53,27 @@ NO_AIRLY_SENSORS: Final = "There are no Airly sensors in this area yet."
 SENSOR_TYPES: tuple[AirlySensorEntityDescription, ...] = (
     AirlySensorEntityDescription(
         key=ATTR_API_CAQI,
+        device_class=DEVICE_CLASS_AQI,
         name=ATTR_API_CAQI,
         native_unit_of_measurement="CAQI",
     ),
     AirlySensorEntityDescription(
         key=ATTR_API_PM1,
-        icon="mdi:blur",
+        device_class=DEVICE_CLASS_PM1,
         name=ATTR_API_PM1,
         native_unit_of_measurement=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
         state_class=STATE_CLASS_MEASUREMENT,
     ),
     AirlySensorEntityDescription(
         key=ATTR_API_PM25,
-        icon="mdi:blur",
+        device_class=DEVICE_CLASS_PM25,
         name="PM2.5",
         native_unit_of_measurement=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
         state_class=STATE_CLASS_MEASUREMENT,
     ),
     AirlySensorEntityDescription(
         key=ATTR_API_PM10,
-        icon="mdi:blur",
+        device_class=DEVICE_CLASS_PM10,
         name=ATTR_API_PM10,
         native_unit_of_measurement=CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
         state_class=STATE_CLASS_MEASUREMENT,
diff --git a/tests/components/airly/test_sensor.py b/tests/components/airly/test_sensor.py
index c566702a5b4..cd17c692176 100644
--- a/tests/components/airly/test_sensor.py
+++ b/tests/components/airly/test_sensor.py
@@ -7,10 +7,13 @@ from homeassistant.const import (
     ATTR_ATTRIBUTION,
     ATTR_DEVICE_CLASS,
     ATTR_ENTITY_ID,
-    ATTR_ICON,
     ATTR_UNIT_OF_MEASUREMENT,
     CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+    DEVICE_CLASS_AQI,
     DEVICE_CLASS_HUMIDITY,
+    DEVICE_CLASS_PM1,
+    DEVICE_CLASS_PM10,
+    DEVICE_CLASS_PM25,
     DEVICE_CLASS_PRESSURE,
     DEVICE_CLASS_TEMPERATURE,
     PERCENTAGE,
@@ -38,6 +41,7 @@ async def test_sensor(hass, aioclient_mock):
     assert state.state == "23"
     assert state.attributes.get(ATTR_ATTRIBUTION) == ATTRIBUTION
     assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == "CAQI"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == DEVICE_CLASS_AQI
 
     entry = registry.async_get("sensor.home_caqi")
     assert entry
@@ -63,7 +67,7 @@ async def test_sensor(hass, aioclient_mock):
         state.attributes.get(ATTR_UNIT_OF_MEASUREMENT)
         == CONCENTRATION_MICROGRAMS_PER_CUBIC_METER
     )
-    assert state.attributes.get(ATTR_ICON) == "mdi:blur"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == DEVICE_CLASS_PM1
     assert state.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
 
     entry = registry.async_get("sensor.home_pm1")
@@ -78,7 +82,7 @@ async def test_sensor(hass, aioclient_mock):
         state.attributes.get(ATTR_UNIT_OF_MEASUREMENT)
         == CONCENTRATION_MICROGRAMS_PER_CUBIC_METER
     )
-    assert state.attributes.get(ATTR_ICON) == "mdi:blur"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == DEVICE_CLASS_PM25
     assert state.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
 
     entry = registry.async_get("sensor.home_pm2_5")
@@ -93,7 +97,7 @@ async def test_sensor(hass, aioclient_mock):
         state.attributes.get(ATTR_UNIT_OF_MEASUREMENT)
         == CONCENTRATION_MICROGRAMS_PER_CUBIC_METER
     )
-    assert state.attributes.get(ATTR_ICON) == "mdi:blur"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == DEVICE_CLASS_PM10
     assert state.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
 
     entry = registry.async_get("sensor.home_pm10")