diff --git a/custom_components/noaa_space_weather/entity.py b/custom_components/noaa_space_weather/entity.py
index b75cbe9..96c5fd3 100644
--- a/custom_components/noaa_space_weather/entity.py
+++ b/custom_components/noaa_space_weather/entity.py
@@ -25,4 +25,5 @@ def extra_state_attributes(self):
             "attribution": ATTRIBUTION,
             "id": str(self.coordinator.data.get("id")),
             "integration": DOMAIN,
+            "state_class": "measurement",
         }