diff --git a/source/_lovelace/weather-forecast.markdown b/source/_lovelace/weather-forecast.markdown
index b92588bd2c2..c636319db9a 100644
--- a/source/_lovelace/weather-forecast.markdown
+++ b/source/_lovelace/weather-forecast.markdown
@@ -34,3 +34,9 @@ entity:
 - type: weather-forecast
   entity: weather.demo_weather_north
 ```
+
+<p class="note">
+  This card works only with platforms that define a `weather` entity.
+  
+  E.g., it works with [Dark Sky](https://www.home-assistant.io/components/weather.darksky/) but not [Dark Sky Sensor](https://www.home-assistant.io/components/sensor.darksky/)
+</p>