diff --git a/homeassistant/components/environment_canada/sensor.py b/homeassistant/components/environment_canada/sensor.py
index a140927c980..b3e4d7ae3df 100644
--- a/homeassistant/components/environment_canada/sensor.py
+++ b/homeassistant/components/environment_canada/sensor.py
@@ -134,8 +134,11 @@ class ECSensor(Entity):
             )
         elif self.sensor_type == "tendency":
             self._state = str(value).capitalize()
-        else:
+        elif value is not None and len(value) > 255:
             self._state = value[:255]
+            _LOGGER.info("Value for %s truncated to 255 characters", self._unique_id)
+        else:
+            self._state = value
 
         if sensor_data.get("unit") == "C" or self.sensor_type in [
             "wind_chill",