diff --git a/homeassistant/components/airgradient/coordinator.py b/homeassistant/components/airgradient/coordinator.py
index 4e1c335019c..03d58645853 100644
--- a/homeassistant/components/airgradient/coordinator.py
+++ b/homeassistant/components/airgradient/coordinator.py
@@ -9,9 +9,10 @@ from typing import TYPE_CHECKING
 from airgradient import AirGradientClient, AirGradientError, Config, Measures
 
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
-from .const import LOGGER
+from .const import DOMAIN, LOGGER
 
 if TYPE_CHECKING:
     from . import AirGradientConfigEntry
@@ -29,6 +30,7 @@ class AirGradientCoordinator(DataUpdateCoordinator[AirGradientData]):
     """Class to manage fetching AirGradient data."""
 
     config_entry: AirGradientConfigEntry
+    _current_version: str
 
     def __init__(self, hass: HomeAssistant, client: AirGradientClient) -> None:
         """Initialize coordinator."""
@@ -42,11 +44,27 @@ class AirGradientCoordinator(DataUpdateCoordinator[AirGradientData]):
         assert self.config_entry.unique_id
         self.serial_number = self.config_entry.unique_id
 
+    async def _async_setup(self) -> None:
+        """Set up the coordinator."""
+        self._current_version = (
+            await self.client.get_current_measures()
+        ).firmware_version
+
     async def _async_update_data(self) -> AirGradientData:
         try:
             measures = await self.client.get_current_measures()
             config = await self.client.get_config()
         except AirGradientError as error:
             raise UpdateFailed(error) from error
-        else:
-            return AirGradientData(measures, config)
+        if measures.firmware_version != self._current_version:
+            device_registry = dr.async_get(self.hass)
+            device_entry = device_registry.async_get_device(
+                identifiers={(DOMAIN, self.serial_number)}
+            )
+            assert device_entry
+            device_registry.async_update_device(
+                device_entry.id,
+                sw_version=measures.firmware_version,
+            )
+            self._current_version = measures.firmware_version
+        return AirGradientData(measures, config)
diff --git a/tests/components/airgradient/test_init.py b/tests/components/airgradient/test_init.py
index a566254d106..a121940f2bc 100644
--- a/tests/components/airgradient/test_init.py
+++ b/tests/components/airgradient/test_init.py
@@ -1,7 +1,9 @@
 """Tests for the AirGradient integration."""
 
+from datetime import timedelta
 from unittest.mock import AsyncMock
 
+from freezegun.api import FrozenDateTimeFactory
 from syrupy import SnapshotAssertion
 
 from homeassistant.components.airgradient.const import DOMAIN
@@ -10,7 +12,7 @@ from homeassistant.helpers import device_registry as dr
 
 from . import setup_integration
 
-from tests.common import MockConfigEntry
+from tests.common import MockConfigEntry, async_fire_time_changed
 
 
 async def test_device_info(
@@ -27,3 +29,28 @@ async def test_device_info(
     )
     assert device_entry is not None
     assert device_entry == snapshot
+
+
+async def test_new_firmware_version(
+    hass: HomeAssistant,
+    mock_airgradient_client: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+    device_registry: dr.DeviceRegistry,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test device registry integration."""
+    await setup_integration(hass, mock_config_entry)
+    device_entry = device_registry.async_get_device(
+        identifiers={(DOMAIN, mock_config_entry.unique_id)}
+    )
+    assert device_entry is not None
+    assert device_entry.sw_version == "3.1.1"
+    mock_airgradient_client.get_current_measures.return_value.firmware_version = "3.1.2"
+    freezer.tick(timedelta(minutes=1))
+    async_fire_time_changed(hass)
+    await hass.async_block_till_done()
+    device_entry = device_registry.async_get_device(
+        identifiers={(DOMAIN, mock_config_entry.unique_id)}
+    )
+    assert device_entry is not None
+    assert device_entry.sw_version == "3.1.2"