diff --git a/homeassistant/components/waqi/sensor.py b/homeassistant/components/waqi/sensor.py
index dbfe6de1a60b..9f3c3ffc13eb 100644
--- a/homeassistant/components/waqi/sensor.py
+++ b/homeassistant/components/waqi/sensor.py
@@ -128,6 +128,16 @@ class WaqiSensor(Entity):
             return self._data.get("aqi")
         return None
 
+    @property
+    def available(self):
+        """Return sensor availability."""
+        return self._data is not None
+
+    @property
+    def unique_id(self):
+        """Return unique ID."""
+        return self.uid
+
     @property
     def unit_of_measurement(self):
         """Return the unit of measurement of this entity, if any."""