diff --git a/tests/components/ambient_station/conftest.py b/tests/components/ambient_station/conftest.py
index adbd6777727..e4f067108a5 100644
--- a/tests/components/ambient_station/conftest.py
+++ b/tests/components/ambient_station/conftest.py
@@ -1,24 +1,31 @@
 """Define test fixtures for Ambient PWS."""
 
-import json
+from typing import Any
 from unittest.mock import AsyncMock, Mock, patch
 
 import pytest
+from typing_extensions import Generator
 
 from homeassistant.components.ambient_station.const import CONF_APP_KEY, DOMAIN
 from homeassistant.const import CONF_API_KEY
+from homeassistant.core import HomeAssistant
+from homeassistant.util.json import JsonArrayType, JsonObjectType
 
-from tests.common import MockConfigEntry, load_fixture
+from tests.common import (
+    MockConfigEntry,
+    load_json_array_fixture,
+    load_json_object_fixture,
+)
 
 
 @pytest.fixture(name="api")
-def api_fixture(hass, data_devices):
+def api_fixture(data_devices: JsonArrayType) -> Mock:
     """Define a mock API object."""
     return Mock(get_devices=AsyncMock(return_value=data_devices))
 
 
 @pytest.fixture(name="config")
-def config_fixture(hass):
+def config_fixture() -> dict[str, Any]:
     """Define a config entry data fixture."""
     return {
         CONF_API_KEY: "12345abcde12345abcde",
@@ -27,7 +34,9 @@ def config_fixture(hass):
 
 
 @pytest.fixture(name="config_entry")
-def config_entry_fixture(hass, config):
+def config_entry_fixture(
+    hass: HomeAssistant, config: dict[str, Any]
+) -> MockConfigEntry:
     """Define a config entry fixture."""
     entry = MockConfigEntry(
         domain=DOMAIN,
@@ -39,19 +48,19 @@ def config_entry_fixture(hass, config):
 
 
 @pytest.fixture(name="data_devices", scope="package")
-def data_devices_fixture():
+def data_devices_fixture() -> JsonArrayType:
     """Define devices data."""
-    return json.loads(load_fixture("devices.json", "ambient_station"))
+    return load_json_array_fixture("devices.json", "ambient_station")
 
 
 @pytest.fixture(name="data_station", scope="package")
-def data_station_fixture():
+def data_station_fixture() -> JsonObjectType:
     """Define station data."""
-    return json.loads(load_fixture("station_data.json", "ambient_station"))
+    return load_json_object_fixture("station_data.json", "ambient_station")
 
 
 @pytest.fixture(name="mock_aioambient")
-async def mock_aioambient_fixture(api):
+def mock_aioambient_fixture(api: Mock) -> Generator[None]:
     """Define a fixture to patch aioambient."""
     with (
         patch(
@@ -64,7 +73,9 @@ async def mock_aioambient_fixture(api):
 
 
 @pytest.fixture(name="setup_config_entry")
-async def setup_config_entry_fixture(hass, config_entry, mock_aioambient):
+async def setup_config_entry_fixture(
+    hass: HomeAssistant, config_entry: MockConfigEntry, mock_aioambient: None
+) -> None:
     """Define a fixture to set up ambient_station."""
     assert await hass.config_entries.async_setup(config_entry.entry_id)
     await hass.async_block_till_done()