diff --git a/homeassistant/components/aurora/binary_sensor.py b/homeassistant/components/aurora/binary_sensor.py
index d817ea51988..49e25e55950 100644
--- a/homeassistant/components/aurora/binary_sensor.py
+++ b/homeassistant/components/aurora/binary_sensor.py
@@ -1,4 +1,6 @@
 """Support for Aurora Forecast binary sensor."""
+from __future__ import annotations
+
 from homeassistant.components.binary_sensor import BinarySensorEntity
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
@@ -27,6 +29,6 @@ class AuroraSensor(AuroraEntity, BinarySensorEntity):
     """Implementation of an aurora sensor."""
 
     @property
-    def is_on(self):
+    def is_on(self) -> bool:
         """Return true if aurora is visible."""
         return self.coordinator.data > self.coordinator.threshold
diff --git a/homeassistant/components/aurora/config_flow.py b/homeassistant/components/aurora/config_flow.py
index 95e66ff226e..a1971884ead 100644
--- a/homeassistant/components/aurora/config_flow.py
+++ b/homeassistant/components/aurora/config_flow.py
@@ -51,7 +51,7 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         self, user_input: dict[str, Any] | None = None
     ) -> FlowResult:
         """Handle the initial step."""
-        errors = {}
+        errors: dict[str, str] = {}
 
         if user_input is not None:
             longitude = user_input[CONF_LONGITUDE]
diff --git a/homeassistant/components/aurora/coordinator.py b/homeassistant/components/aurora/coordinator.py
index 9d4eb0aa681..8195f6d30ec 100644
--- a/homeassistant/components/aurora/coordinator.py
+++ b/homeassistant/components/aurora/coordinator.py
@@ -1,4 +1,5 @@
 """The aurora component."""
+from __future__ import annotations
 
 from datetime import timedelta
 import logging
@@ -12,7 +13,7 @@ from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, Upda
 _LOGGER = logging.getLogger(__name__)
 
 
-class AuroraDataUpdateCoordinator(DataUpdateCoordinator):
+class AuroraDataUpdateCoordinator(DataUpdateCoordinator[int]):
     """Class to manage fetching data from the NOAA Aurora API."""
 
     def __init__(
@@ -37,7 +38,7 @@ class AuroraDataUpdateCoordinator(DataUpdateCoordinator):
         self.longitude = int(longitude)
         self.threshold = int(threshold)
 
-    async def _async_update_data(self):
+    async def _async_update_data(self) -> int:
         """Fetch the data from the NOAA Aurora Forecast."""
 
         try:
diff --git a/homeassistant/components/aurora/sensor.py b/homeassistant/components/aurora/sensor.py
index f44cc23f832..3ad36591f15 100644
--- a/homeassistant/components/aurora/sensor.py
+++ b/homeassistant/components/aurora/sensor.py
@@ -1,4 +1,6 @@
 """Support for Aurora Forecast sensor."""
+from __future__ import annotations
+
 from homeassistant.components.sensor import SensorEntity, SensorStateClass
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import PERCENTAGE
@@ -31,6 +33,6 @@ class AuroraSensor(AuroraEntity, SensorEntity):
     _attr_state_class = SensorStateClass.MEASUREMENT
 
     @property
-    def native_value(self):
+    def native_value(self) -> int:
         """Return % chance the aurora is visible."""
         return self.coordinator.data