Home Page Caching

Hello.

In my Home page i have a weather widget that doesn’t update with ANY caching plugin. So i have two options, (1) to clear the Home page every 1-2 hours or exclude the home page from caching.

Any ideas if and how can i exclude the home page ?

Also pls consider a special cleanup option of home page every xxxx hours, because not many widgets are ajaxized.

Thanks