diff --git a/tests/components/airnow/conftest.py b/tests/components/airnow/conftest.py
index 4e9d1698e8c..0356c6f3395 100644
--- a/tests/components/airnow/conftest.py
+++ b/tests/components/airnow/conftest.py
@@ -6,7 +6,6 @@ import pytest
 
 from homeassistant.components.airnow import DOMAIN
 from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, CONF_RADIUS
-from homeassistant.setup import async_setup_component
 
 from tests.common import MockConfigEntry, load_fixture
 
@@ -60,8 +59,6 @@ def mock_api_get_fixture(data):
 async def setup_airnow_fixture(hass, config, mock_api_get):
     """Define a fixture to set up AirNow."""
     with patch("pyairnow.WebServiceAPI._get", mock_api_get), patch(
-        "homeassistant.components.airnow.config_flow.WebServiceAPI._get", mock_api_get
-    ), patch("homeassistant.components.airnow.PLATFORMS", []):
-        assert await async_setup_component(hass, DOMAIN, config)
-        await hass.async_block_till_done()
+        "homeassistant.components.airnow.PLATFORMS", []
+    ):
         yield
diff --git a/tests/components/airnow/test_diagnostics.py b/tests/components/airnow/test_diagnostics.py
index ecf6acc1c80..50ff3ed2b32 100644
--- a/tests/components/airnow/test_diagnostics.py
+++ b/tests/components/airnow/test_diagnostics.py
@@ -15,6 +15,7 @@ async def test_entry_diagnostics(
     snapshot: SnapshotAssertion,
 ) -> None:
     """Test config entry diagnostics."""
+    assert await hass.config_entries.async_setup(config_entry.entry_id)
     assert (
         await get_diagnostics_for_config_entry(hass, hass_client, config_entry)
         == snapshot