diff --git a/source/_components/sensor.wunderground.markdown b/source/_components/sensor.wunderground.markdown
index bf99f2b9340..f86735c69b7 100644
--- a/source/_components/sensor.wunderground.markdown
+++ b/source/_components/sensor.wunderground.markdown
@@ -195,4 +195,8 @@ group:
 Note: While the platform is called “wunderground” the sensors will show up in Home Assistant as “PWS” (eg: sensor.pws_weather).
 </p>
 
+Note that the Weather Underground sensor is added to the entity_registry, so second and subsequent Personal Weather Station ID (pws_id) will have their monitored conditions suffixed with an index number e.g.
+
+      - sensor.pws_weather_1d_metric_2
+
 Additional details about the API are available [here](https://www.wunderground.com/weather/api/d/docs).