diff --git a/homeassistant/components/ambient_station/__init__.py b/homeassistant/components/ambient_station/__init__.py
index 58389dd183189e..c61e15dfeb5731 100644
--- a/homeassistant/components/ambient_station/__init__.py
+++ b/homeassistant/components/ambient_station/__init__.py
@@ -26,6 +26,7 @@
 from .config_flow import configured_instances
 from .const import (
     ATTR_LAST_DATA,
+    ATTR_MONITORED_CONDITIONS,
     CONF_APP_KEY,
     DATA_CLIENT,
     DOMAIN,
@@ -341,7 +342,6 @@ def __init__(self, hass, config_entry, client):
         self._watchdog_listener = None
         self._ws_reconnect_delay = DEFAULT_SOCKET_MIN_RETRY
         self.client = client
-        self.monitored_conditions = []
         self.stations = {}
 
     async def _attempt_connect(self):
@@ -398,19 +398,19 @@ def on_subscribed(data):
 
                 _LOGGER.debug("New station subscription: %s", data)
 
-                self.monitored_conditions = [
+                # Only create entities based on the data coming through the socket.
+                # If the user is monitoring brightness (in W/m^2), make sure we also
+                # add a calculated sensor for the same data measured in lx:
+                monitored_conditions = [
                     k for k in station["lastData"] if k in SENSOR_TYPES
                 ]
-
-                # If the user is monitoring brightness (in W/m^2),
-                # make sure we also add a calculated sensor for the
-                # same data measured in lx:
-                if TYPE_SOLARRADIATION in self.monitored_conditions:
-                    self.monitored_conditions.append(TYPE_SOLARRADIATION_LX)
+                if TYPE_SOLARRADIATION in monitored_conditions:
+                    monitored_conditions.append(TYPE_SOLARRADIATION_LX)
 
                 self.stations[station["macAddress"]] = {
                     ATTR_LAST_DATA: station["lastData"],
                     ATTR_LOCATION: station.get("info", {}).get("location"),
+                    ATTR_MONITORED_CONDITIONS: monitored_conditions,
                     ATTR_NAME: station.get("info", {}).get(
                         "name", station["macAddress"]
                     ),
diff --git a/homeassistant/components/ambient_station/binary_sensor.py b/homeassistant/components/ambient_station/binary_sensor.py
index 3f02eb9f1e8282..1ed6dbd0db4aa0 100644
--- a/homeassistant/components/ambient_station/binary_sensor.py
+++ b/homeassistant/components/ambient_station/binary_sensor.py
@@ -19,7 +19,13 @@
     TYPE_BATTOUT,
     AmbientWeatherEntity,
 )
-from .const import ATTR_LAST_DATA, DATA_CLIENT, DOMAIN, TYPE_BINARY_SENSOR
+from .const import (
+    ATTR_LAST_DATA,
+    ATTR_MONITORED_CONDITIONS,
+    DATA_CLIENT,
+    DOMAIN,
+    TYPE_BINARY_SENSOR,
+)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -35,7 +41,7 @@ async def async_setup_entry(hass, entry, async_add_entities):
 
     binary_sensor_list = []
     for mac_address, station in ambient.stations.items():
-        for condition in ambient.monitored_conditions:
+        for condition in station[ATTR_MONITORED_CONDITIONS]:
             name, _, kind, device_class = SENSOR_TYPES[condition]
             if kind == TYPE_BINARY_SENSOR:
                 binary_sensor_list.append(
diff --git a/homeassistant/components/ambient_station/const.py b/homeassistant/components/ambient_station/const.py
index b2df34f2f28e34..21a6e514b3073e 100644
--- a/homeassistant/components/ambient_station/const.py
+++ b/homeassistant/components/ambient_station/const.py
@@ -2,6 +2,7 @@
 DOMAIN = "ambient_station"
 
 ATTR_LAST_DATA = "last_data"
+ATTR_MONITORED_CONDITIONS = "monitored_conditions"
 
 CONF_APP_KEY = "app_key"
 
diff --git a/homeassistant/components/ambient_station/sensor.py b/homeassistant/components/ambient_station/sensor.py
index 56425221e0d334..0120799d6f2bfb 100644
--- a/homeassistant/components/ambient_station/sensor.py
+++ b/homeassistant/components/ambient_station/sensor.py
@@ -9,7 +9,13 @@
     TYPE_SOLARRADIATION_LX,
     AmbientWeatherEntity,
 )
-from .const import ATTR_LAST_DATA, DATA_CLIENT, DOMAIN, TYPE_SENSOR
+from .const import (
+    ATTR_LAST_DATA,
+    ATTR_MONITORED_CONDITIONS,
+    DATA_CLIENT,
+    DOMAIN,
+    TYPE_SENSOR,
+)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -25,7 +31,7 @@ async def async_setup_entry(hass, entry, async_add_entities):
 
     sensor_list = []
     for mac_address, station in ambient.stations.items():
-        for condition in ambient.monitored_conditions:
+        for condition in station[ATTR_MONITORED_CONDITIONS]:
             name, unit, kind, device_class = SENSOR_TYPES[condition]
             if kind == TYPE_SENSOR:
                 sensor_list.append(