diff --git a/homeassistant/components/google_assistant/trait.py b/homeassistant/components/google_assistant/trait.py
index e44f1597a9b..02e9518ca5e 100644
--- a/homeassistant/components/google_assistant/trait.py
+++ b/homeassistant/components/google_assistant/trait.py
@@ -1216,9 +1216,12 @@ class HumiditySettingTrait(_Trait):
                     response["humidityAmbientPercent"] = round(float(current_humidity))
 
         elif domain == humidifier.DOMAIN:
-            target_humidity = attrs.get(humidifier.ATTR_HUMIDITY)
+            target_humidity: int | None = attrs.get(humidifier.ATTR_HUMIDITY)
             if target_humidity is not None:
-                response["humiditySetpointPercent"] = round(float(target_humidity))
+                response["humiditySetpointPercent"] = target_humidity
+            current_humidity: int | None = attrs.get(humidifier.ATTR_CURRENT_HUMIDITY)
+            if current_humidity is not None:
+                response["humidityAmbientPercent"] = current_humidity
 
         return response
 
diff --git a/tests/components/google_assistant/test_google_assistant.py b/tests/components/google_assistant/test_google_assistant.py
index ffcafde5502..177220cc02f 100644
--- a/tests/components/google_assistant/test_google_assistant.py
+++ b/tests/components/google_assistant/test_google_assistant.py
@@ -351,11 +351,13 @@ async def test_query_humidifier_request(
         "on": True,
         "online": True,
         "humiditySetpointPercent": 68,
+        "humidityAmbientPercent": 45,
     }
     assert devices["humidifier.dehumidifier"] == {
         "on": True,
         "online": True,
         "humiditySetpointPercent": 54,
+        "humidityAmbientPercent": 59,
     }
     assert devices["humidifier.hygrostat"] == {
         "on": True,
diff --git a/tests/components/google_assistant/test_trait.py b/tests/components/google_assistant/test_trait.py
index 97dc4af7c36..edf69fd0234 100644
--- a/tests/components/google_assistant/test_trait.py
+++ b/tests/components/google_assistant/test_trait.py
@@ -1203,6 +1203,7 @@ async def test_humidity_setting_humidifier_setpoint(hass: HomeAssistant) -> None
                 humidifier.ATTR_MIN_HUMIDITY: 20,
                 humidifier.ATTR_MAX_HUMIDITY: 90,
                 humidifier.ATTR_HUMIDITY: 38,
+                humidifier.ATTR_CURRENT_HUMIDITY: 30,
             },
         ),
         BASIC_CONFIG,
@@ -1212,6 +1213,7 @@ async def test_humidity_setting_humidifier_setpoint(hass: HomeAssistant) -> None
     }
     assert trt.query_attributes() == {
         "humiditySetpointPercent": 38,
+        "humidityAmbientPercent": 30,
     }
     assert trt.can_execute(trait.COMMAND_SET_HUMIDITY, {})