diff --git a/homeassistant/components/netatmo/data_handler.py b/homeassistant/components/netatmo/data_handler.py
index e93e602d6a7..5e007e8634d 100644
--- a/homeassistant/components/netatmo/data_handler.py
+++ b/homeassistant/components/netatmo/data_handler.py
@@ -3,6 +3,7 @@ from __future__ import annotations
 
 import asyncio
 from collections import deque
+from dataclasses import dataclass
 from datetime import timedelta
 from itertools import islice
 import logging
@@ -34,8 +35,6 @@ HOMEDATA_DATA_CLASS_NAME = "AsyncHomeData"
 HOMESTATUS_DATA_CLASS_NAME = "AsyncHomeStatus"
 PUBLICDATA_DATA_CLASS_NAME = "AsyncPublicData"
 
-NEXT_SCAN = "next_scan"
-
 DATA_CLASSES = {
     WEATHERSTATION_DATA_CLASS_NAME: pyatmo.AsyncWeatherStationData,
     HOMECOACH_DATA_CLASS_NAME: pyatmo.AsyncHomeCoachData,
@@ -57,6 +56,16 @@ DEFAULT_INTERVALS = {
 SCAN_INTERVAL = 60
 
 
+@dataclass
+class NetatmoDataClass:
+    """Class for keeping track of Netatmo data class metadata."""
+
+    name: str
+    interval: int
+    next_scan: float
+    subscriptions: list[CALLBACK_TYPE]
+
+
 class NetatmoDataHandler:
     """Manages the Netatmo data handling."""
 
@@ -93,12 +102,12 @@ class NetatmoDataHandler:
         to minimize the calls on the api service.
         """
         for data_class in islice(self._queue, 0, BATCH_SIZE):
-            if data_class[NEXT_SCAN] > time():
+            if data_class.next_scan > time():
                 continue
 
-            if data_class_name := data_class["name"]:
-                self.data_classes[data_class_name][NEXT_SCAN] = (
-                    time() + data_class["interval"]
+            if data_class_name := data_class.name:
+                self.data_classes[data_class_name].next_scan = (
+                    time() + data_class.interval
                 )
 
                 await self.async_fetch_data(data_class_name)
@@ -108,7 +117,7 @@ class NetatmoDataHandler:
     @callback
     def async_force_update(self, data_class_entry):
         """Prioritize data retrieval for given data class entry."""
-        self.data_classes[data_class_entry][NEXT_SCAN] = time()
+        self.data_classes[data_class_entry].next_scan = time()
         self._queue.rotate(-(self._queue.index(self.data_classes[data_class_entry])))
 
     async def async_cleanup(self):
@@ -149,7 +158,7 @@ class NetatmoDataHandler:
             _LOGGER.debug(err)
             return
 
-        for update_callback in self.data_classes[data_class_entry]["subscriptions"]:
+        for update_callback in self.data_classes[data_class_entry].subscriptions:
             if update_callback:
                 update_callback()
 
@@ -158,21 +167,18 @@ class NetatmoDataHandler:
     ):
         """Register data class."""
         if data_class_entry in self.data_classes:
-            if (
-                update_callback
-                not in self.data_classes[data_class_entry]["subscriptions"]
-            ):
-                self.data_classes[data_class_entry]["subscriptions"].append(
+            if update_callback not in self.data_classes[data_class_entry].subscriptions:
+                self.data_classes[data_class_entry].subscriptions.append(
                     update_callback
                 )
             return
 
-        self.data_classes[data_class_entry] = {
-            "name": data_class_entry,
-            "interval": DEFAULT_INTERVALS[data_class_name],
-            NEXT_SCAN: time() + DEFAULT_INTERVALS[data_class_name],
-            "subscriptions": [update_callback],
-        }
+        self.data_classes[data_class_entry] = NetatmoDataClass(
+            name=data_class_entry,
+            interval=DEFAULT_INTERVALS[data_class_name],
+            next_scan=time() + DEFAULT_INTERVALS[data_class_name],
+            subscriptions=[update_callback],
+        )
 
         self.data[data_class_entry] = DATA_CLASSES[data_class_name](
             self._auth, **kwargs
@@ -185,9 +191,9 @@ class NetatmoDataHandler:
 
     async def unregister_data_class(self, data_class_entry, update_callback):
         """Unregister data class."""
-        self.data_classes[data_class_entry]["subscriptions"].remove(update_callback)
+        self.data_classes[data_class_entry].subscriptions.remove(update_callback)
 
-        if not self.data_classes[data_class_entry].get("subscriptions"):
+        if not self.data_classes[data_class_entry].subscriptions:
             self._queue.remove(self.data_classes[data_class_entry])
             self.data_classes.pop(data_class_entry)
             self.data.pop(data_class_entry)
diff --git a/homeassistant/components/netatmo/netatmo_entity_base.py b/homeassistant/components/netatmo/netatmo_entity_base.py
index b74975f3a62..eb65bc4da0f 100644
--- a/homeassistant/components/netatmo/netatmo_entity_base.py
+++ b/homeassistant/components/netatmo/netatmo_entity_base.py
@@ -61,7 +61,7 @@ class NetatmoBase(Entity):
                     data_class["name"], signal_name, self.async_update_callback
                 )
 
-            for sub in self.data_handler.data_classes[signal_name].get("subscriptions"):
+            for sub in self.data_handler.data_classes[signal_name].subscriptions:
                 if sub is None:
                     await self.data_handler.unregister_data_class(signal_name, None)