diff --git a/homeassistant/components/aurora/sensor.py b/homeassistant/components/aurora/sensor.py
index 2710badb516..de5e566e268 100644
--- a/homeassistant/components/aurora/sensor.py
+++ b/homeassistant/components/aurora/sensor.py
@@ -1,5 +1,5 @@
 """Support for Aurora Forecast sensor."""
-from homeassistant.components.sensor import SensorEntity
+from homeassistant.components.sensor import SensorEntity, SensorStateClass
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import PERCENTAGE
 from homeassistant.core import HomeAssistant
@@ -28,6 +28,7 @@ class AuroraSensor(AuroraEntity, SensorEntity):
     """Implementation of an aurora sensor."""
 
     _attr_native_unit_of_measurement = PERCENTAGE
+    _attr_state_class = SensorStateClass.MEASUREMENT
 
     @property
     def native_value(self):