diff --git a/homeassistant/components/sensor/awair.py b/homeassistant/components/sensor/awair.py
index bce0acb5141..9a45cb66a86 100644
--- a/homeassistant/components/sensor/awair.py
+++ b/homeassistant/components/sensor/awair.py
@@ -215,6 +215,10 @@ class AwairData:
     async def _async_update(self):
         """Get the data from Awair API."""
         resp = await self._client.air_data_latest(self._uuid)
+
+        if not resp:
+            return
+
         timestamp = dt.parse_datetime(resp[0][ATTR_TIMESTAMP])
         self.attrs[ATTR_LAST_API_UPDATE] = timestamp
         self.data[ATTR_SCORE] = resp[0][ATTR_SCORE]
diff --git a/tests/components/sensor/test_awair.py b/tests/components/sensor/test_awair.py
index d3de2abb121..e00cc816518 100644
--- a/tests/components/sensor/test_awair.py
+++ b/tests/components/sensor/test_awair.py
@@ -45,6 +45,7 @@ AIR_DATA_FIXTURE_UPDATED = json.loads(
     load_fixture("awair_air_data_latest_updated.json")
 )
 AIR_DATA_FIXTURE_UPDATED[0][ATTR_TIMESTAMP] = str(NOW + timedelta(minutes=5))
+AIR_DATA_FIXTURE_EMPTY = []
 
 
 @contextmanager
@@ -60,13 +61,13 @@ def alter_time(retval):
         yield
 
 
-async def setup_awair(hass, config=None):
+async def setup_awair(hass, config=None, data_fixture=AIR_DATA_FIXTURE):
     """Load the Awair platform."""
     devices_json = json.loads(load_fixture("awair_devices.json"))
     devices_mock = mock_coro(devices_json)
     devices_patch = patch(
         "python_awair.AwairClient.devices", return_value=devices_mock)
-    air_data_mock = mock_coro(AIR_DATA_FIXTURE)
+    air_data_mock = mock_coro(data_fixture)
     air_data_patch = patch(
         "python_awair.AwairClient.air_data_latest", return_value=air_data_mock
     )
@@ -136,6 +137,12 @@ async def test_bad_platform_setup(hass):
         assert not hass.states.async_all()
 
 
+async def test_awair_setup_no_data(hass):
+    """Ensure that we do not crash during setup when no data is returned."""
+    await setup_awair(hass, data_fixture=AIR_DATA_FIXTURE_EMPTY)
+    assert not hass.states.async_all()
+
+
 async def test_awair_misc_attributes(hass):
     """Test that desired attributes are set."""
     await setup_awair(hass)
@@ -252,6 +259,19 @@ async def test_availability(hass):
 
     assert hass.states.get("sensor.awair_score").state == "79"
 
+    future = NOW + timedelta(minutes=90)
+    fixture = AIR_DATA_FIXTURE_EMPTY
+    data_patch = patch(
+        "python_awair.AwairClient.air_data_latest",
+        return_value=mock_coro(fixture)
+    )
+
+    with data_patch, alter_time(future):
+        async_fire_time_changed(hass, future)
+        await hass.async_block_till_done()
+
+    assert hass.states.get("sensor.awair_score").state == STATE_UNAVAILABLE
+
 
 async def test_async_update(hass):
     """Ensure we can update sensors."""