diff --git a/homeassistant/components/airgradient/config_flow.py b/homeassistant/components/airgradient/config_flow.py
index c7b617de272..fff2615365e 100644
--- a/homeassistant/components/airgradient/config_flow.py
+++ b/homeassistant/components/airgradient/config_flow.py
@@ -3,6 +3,8 @@
 from typing import Any
 
 from airgradient import AirGradientClient, AirGradientError, ConfigurationControl
+from awesomeversion import AwesomeVersion
+from mashumaro import MissingField
 import voluptuous as vol
 
 from homeassistant.components import zeroconf
@@ -12,6 +14,8 @@ from homeassistant.helpers.aiohttp_client import async_get_clientsession
 
 from .const import DOMAIN
 
+MIN_VERSION = AwesomeVersion("3.1.1")
+
 
 class AirGradientConfigFlow(ConfigFlow, domain=DOMAIN):
     """AirGradient config flow."""
@@ -38,6 +42,9 @@ class AirGradientConfigFlow(ConfigFlow, domain=DOMAIN):
         await self.async_set_unique_id(discovery_info.properties["serialno"])
         self._abort_if_unique_id_configured(updates={CONF_HOST: host})
 
+        if AwesomeVersion(discovery_info.properties["fw_ver"]) < MIN_VERSION:
+            return self.async_abort(reason="invalid_version")
+
         session = async_get_clientsession(self.hass)
         self.client = AirGradientClient(host, session=session)
         await self.client.get_current_measures()
@@ -78,6 +85,8 @@ class AirGradientConfigFlow(ConfigFlow, domain=DOMAIN):
                 current_measures = await self.client.get_current_measures()
             except AirGradientError:
                 errors["base"] = "cannot_connect"
+            except MissingField:
+                return self.async_abort(reason="invalid_version")
             else:
                 await self.async_set_unique_id(current_measures.serial_number)
                 self._abort_if_unique_id_configured()
diff --git a/homeassistant/components/airgradient/strings.json b/homeassistant/components/airgradient/strings.json
index 9deaf17d0e4..3b1e9f9ee41 100644
--- a/homeassistant/components/airgradient/strings.json
+++ b/homeassistant/components/airgradient/strings.json
@@ -15,7 +15,8 @@
       }
     },
     "abort": {
-      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]",
+      "invalid_version": "This firmware version is unsupported. Please upgrade the firmware of the device to at least version 3.1.1."
     },
     "error": {
       "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
diff --git a/tests/components/airgradient/conftest.py b/tests/components/airgradient/conftest.py
index d2495c11a79..d5857fdc46a 100644
--- a/tests/components/airgradient/conftest.py
+++ b/tests/components/airgradient/conftest.py
@@ -62,7 +62,7 @@ def mock_new_airgradient_client(
 def mock_cloud_airgradient_client(
     mock_airgradient_client: AsyncMock,
 ) -> Generator[AsyncMock, None, None]:
-    """Mock a new AirGradient client."""
+    """Mock a cloud AirGradient client."""
     mock_airgradient_client.get_config.return_value = Config.from_json(
         load_fixture("get_config_cloud.json", DOMAIN)
     )
diff --git a/tests/components/airgradient/test_config_flow.py b/tests/components/airgradient/test_config_flow.py
index 6bb951f2e26..217d2ac0e8c 100644
--- a/tests/components/airgradient/test_config_flow.py
+++ b/tests/components/airgradient/test_config_flow.py
@@ -4,6 +4,7 @@ from ipaddress import ip_address
 from unittest.mock import AsyncMock
 
 from airgradient import AirGradientConnectionError, ConfigurationControl
+from mashumaro import MissingField
 
 from homeassistant.components.airgradient import DOMAIN
 from homeassistant.components.zeroconf import ZeroconfServiceInfo
@@ -14,7 +15,7 @@ from homeassistant.data_entry_flow import FlowResultType
 
 from tests.common import MockConfigEntry
 
-ZEROCONF_DISCOVERY = ZeroconfServiceInfo(
+OLD_ZEROCONF_DISCOVERY = ZeroconfServiceInfo(
     ip_address=ip_address("10.0.0.131"),
     ip_addresses=[ip_address("10.0.0.131")],
     hostname="airgradient_84fce612f5b8.local.",
@@ -29,6 +30,21 @@ ZEROCONF_DISCOVERY = ZeroconfServiceInfo(
     },
 )
 
+ZEROCONF_DISCOVERY = ZeroconfServiceInfo(
+    ip_address=ip_address("10.0.0.131"),
+    ip_addresses=[ip_address("10.0.0.131")],
+    hostname="airgradient_84fce612f5b8.local.",
+    name="airgradient_84fce612f5b8._airgradient._tcp.local.",
+    port=80,
+    type="_airgradient._tcp.local.",
+    properties={
+        "vendor": "AirGradient",
+        "fw_ver": "3.1.1",
+        "serialno": "84fce612f5b8",
+        "model": "I-9PSL",
+    },
+)
+
 
 async def test_full_flow(
     hass: HomeAssistant,
@@ -119,6 +135,34 @@ async def test_flow_errors(
     assert result["type"] is FlowResultType.CREATE_ENTRY
 
 
+async def test_flow_old_firmware_version(
+    hass: HomeAssistant,
+    mock_airgradient_client: AsyncMock,
+    mock_setup_entry: AsyncMock,
+) -> None:
+    """Test flow with old firmware version."""
+    mock_airgradient_client.get_current_measures.side_effect = MissingField(
+        "", object, object
+    )
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": SOURCE_USER},
+    )
+    await hass.async_block_till_done()
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "user"
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {CONF_HOST: "10.0.0.131"},
+    )
+    await hass.async_block_till_done()
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "invalid_version"
+
+
 async def test_duplicate(
     hass: HomeAssistant,
     mock_airgradient_client: AsyncMock,
@@ -197,3 +241,14 @@ async def test_zeroconf_flow_cloud_device(
     )
     assert result["type"] is FlowResultType.CREATE_ENTRY
     mock_cloud_airgradient_client.set_configuration_control.assert_not_called()
+
+
+async def test_zeroconf_flow_abort_old_firmware(hass: HomeAssistant) -> None:
+    """Test zeroconf flow aborts with old firmware."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": SOURCE_ZEROCONF},
+        data=OLD_ZEROCONF_DISCOVERY,
+    )
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "invalid_version"