Integrating weather information in iphone

Can anyone tell me the steps t开发者_开发知识库o integrate weather information into my iPhone App. I found some API's are there, but didn't found steps for this. Thanks in advance.

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use google weather in php

see the link http://komunitasweb.com/2009/09/showing-the-weather-with-php-and-google-weather-api/

to iphone see old question in so :

https://stackoverflow.com/questions/1305127/free-weather-api

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http://www.weather.com/services/xmloap.html