This Weather Shield is for Arduino and it supports Cloud service with Arduino Ethernet Shield.
The point is without Ethernet Shield, it is nothing.
Cloud service, xively, shows visual stuffs with the data from Weather shield.
This Shield has Library and examples.
And user can choose using it as Web Server or Cloud service.
Below picture shows the prototype weather shield and web page.
This is the Weather Shield for selling with xively Cloud Service.
User can choose one of the services; Web server or Cloud service.
There are schematic and documents about it;
Author : ethermania.com