diff --git a/homeassistant/components/agent_dvr/camera.py b/homeassistant/components/agent_dvr/camera.py
index 7904f98216b..24cd5dbb92c 100644
--- a/homeassistant/components/agent_dvr/camera.py
+++ b/homeassistant/components/agent_dvr/camera.py
@@ -102,10 +102,10 @@ class AgentCamera(MjpegCamera):
                 _LOGGER.debug("%s reacquired", self._name)
             self._removed = False
         except AgentError:
-            if self.device.client.is_available:  # server still available - camera error
-                if not self._removed:
-                    _LOGGER.error("%s lost", self._name)
-                    self._removed = True
+            # server still available - camera error
+            if self.device.client.is_available and not self._removed:
+                _LOGGER.error("%s lost", self._name)
+                self._removed = True
 
     @property
     def extra_state_attributes(self):
diff --git a/homeassistant/components/alarmdecoder/config_flow.py b/homeassistant/components/alarmdecoder/config_flow.py
index a82b84b60d1..08c8052c04b 100644
--- a/homeassistant/components/alarmdecoder/config_flow.py
+++ b/homeassistant/components/alarmdecoder/config_flow.py
@@ -349,12 +349,18 @@ def _device_already_added(current_entries, user_input, protocol):
         entry_path = entry.data.get(CONF_DEVICE_PATH)
         entry_baud = entry.data.get(CONF_DEVICE_BAUD)
 
-        if protocol == PROTOCOL_SOCKET:
-            if user_host == entry_host and user_port == entry_port:
-                return True
+        if (
+            protocol == PROTOCOL_SOCKET
+            and user_host == entry_host
+            and user_port == entry_port
+        ):
+            return True
 
-        if protocol == PROTOCOL_SERIAL:
-            if user_baud == entry_baud and user_path == entry_path:
-                return True
+        if (
+            protocol == PROTOCOL_SERIAL
+            and user_baud == entry_baud
+            and user_path == entry_path
+        ):
+            return True
 
     return False
diff --git a/homeassistant/components/alexa/handlers.py b/homeassistant/components/alexa/handlers.py
index dce4f9f2210..cee4cda562d 100644
--- a/homeassistant/components/alexa/handlers.py
+++ b/homeassistant/components/alexa/handlers.py
@@ -653,10 +653,9 @@ def temperature_from_object(hass, temp_obj, interval=False):
 
     if temp_obj["scale"] == "FAHRENHEIT":
         from_unit = TEMP_FAHRENHEIT
-    elif temp_obj["scale"] == "KELVIN":
+    elif temp_obj["scale"] == "KELVIN" and not interval:
         # convert to Celsius if absolute temperature
-        if not interval:
-            temp -= 273.15
+        temp -= 273.15
 
     return convert_temperature(temp, from_unit, to_unit, interval)
 
diff --git a/homeassistant/components/apprise/notify.py b/homeassistant/components/apprise/notify.py
index 95bf11ddc09..5f4a6b66643 100644
--- a/homeassistant/components/apprise/notify.py
+++ b/homeassistant/components/apprise/notify.py
@@ -42,11 +42,10 @@ def get_service(hass, config, discovery_info=None):
             _LOGGER.error("Invalid Apprise config url provided")
             return None
 
-    if config.get(CONF_URL):
-        # Ordered list of URLs
-        if not a_obj.add(config[CONF_URL]):
-            _LOGGER.error("Invalid Apprise URL(s) supplied")
-            return None
+    # Ordered list of URLs
+    if config.get(CONF_URL) and not a_obj.add(config[CONF_URL]):
+        _LOGGER.error("Invalid Apprise URL(s) supplied")
+        return None
 
     return AppriseNotificationService(a_obj)
 
diff --git a/homeassistant/components/asuswrt/router.py b/homeassistant/components/asuswrt/router.py
index 550e4c8fc16..c5880ea11bb 100644
--- a/homeassistant/components/asuswrt/router.py
+++ b/homeassistant/components/asuswrt/router.py
@@ -341,9 +341,8 @@ class AsusWrtRouter:
 
     async def close(self) -> None:
         """Close the connection."""
-        if self._api is not None:
-            if self._protocol == PROTOCOL_TELNET:
-                self._api.connection.disconnect()
+        if self._api is not None and self._protocol == PROTOCOL_TELNET:
+            self._api.connection.disconnect()
         self._api = None
 
         for func in self._on_close:
diff --git a/homeassistant/components/cast/media_player.py b/homeassistant/components/cast/media_player.py
index 540f3263e1e..7c2a696027f 100644
--- a/homeassistant/components/cast/media_player.py
+++ b/homeassistant/components/cast/media_player.py
@@ -706,15 +706,15 @@ class CastDevice(MediaPlayerEntity):
         support = SUPPORT_CAST
         media_status = self._media_status()[0]
 
-        if self.cast_status:
-            if self.cast_status.volume_control_type != VOLUME_CONTROL_TYPE_FIXED:
-                support |= SUPPORT_VOLUME_MUTE | SUPPORT_VOLUME_SET
+        if (
+            self.cast_status
+            and self.cast_status.volume_control_type != VOLUME_CONTROL_TYPE_FIXED
+        ):
+            support |= SUPPORT_VOLUME_MUTE | SUPPORT_VOLUME_SET
 
         if media_status:
             if media_status.supports_queue_next:
-                support |= SUPPORT_PREVIOUS_TRACK
-            if media_status.supports_queue_next:
-                support |= SUPPORT_NEXT_TRACK
+                support |= SUPPORT_PREVIOUS_TRACK | SUPPORT_NEXT_TRACK
             if media_status.supports_seek:
                 support |= SUPPORT_SEEK
 
diff --git a/homeassistant/components/climacell/weather.py b/homeassistant/components/climacell/weather.py
index e6485f90936..b9da5431dd0 100644
--- a/homeassistant/components/climacell/weather.py
+++ b/homeassistant/components/climacell/weather.py
@@ -274,13 +274,12 @@ class ClimaCellWeatherEntity(ClimaCellEntity, WeatherEntity):
                     ),
                     temp_low,
                 )
-            elif self.forecast_type == NOWCAST:
+            elif self.forecast_type == NOWCAST and precipitation:
                 # Precipitation is forecasted in CONF_TIMESTEP increments but in a
                 # per hour rate, so value needs to be converted to an amount.
-                if precipitation:
-                    precipitation = (
-                        precipitation / 60 * self._config_entry.options[CONF_TIMESTEP]
-                    )
+                precipitation = (
+                    precipitation / 60 * self._config_entry.options[CONF_TIMESTEP]
+                )
 
             forecasts.append(
                 _forecast_dict(