diff --git a/source/_integrations/openweathermap.markdown b/source/_integrations/openweathermap.markdown
index edd7e5aa66f..8934615d88e 100644
--- a/source/_integrations/openweathermap.markdown
+++ b/source/_integrations/openweathermap.markdown
@@ -17,7 +17,7 @@ ha_platforms:
   - weather
 ---
 
-The `openweathermap` weather platform uses [OpenWeatherMap](https://openweathermap.org/) as a source for current meteorological data for your location.
+The OpenWeatherMap weather integrations uses [OpenWeatherMap](https://openweathermap.org/) as a source for current meteorological data for your location.
 
 There is currently support for the following device types within Home Assistant:
 
@@ -26,6 +26,12 @@ There is currently support for the following device types within Home Assistant:
 
 You need an API key, which is free, but requires a [registration](https://home.openweathermap.org/users/sign_up).
 
+<div class='note'>
+If you register an new API key with OpenWeatherMap, it will be activated automatically, this typically takes between 10 minutes and 2 hours
+after your successful registration. Keep in mind when configuring this integration, that you new API key might
+not be activated yet.
+</div>
+
 {% include integrations/config_flow.md %}
 
 | Parameter            | Value                                                                                                                                                                                                                                      |