diff --git a/homeassistant/components/waqi/sensor.py b/homeassistant/components/waqi/sensor.py
index e91e3da5aa5..ae4e46c2a0b 100644
--- a/homeassistant/components/waqi/sensor.py
+++ b/homeassistant/components/waqi/sensor.py
@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import asyncio
+from contextlib import suppress
 from datetime import timedelta
 import logging
 
@@ -141,8 +142,9 @@ class WaqiSensor(SensorEntity):
     @property
     def native_value(self):
         """Return the state of the device."""
-        if self._data is not None:
-            return self._data.get("aqi")
+        if value := self._data.get("aqi"):
+            with suppress(ValueError):
+                return float(value)
         return None
 
     @property