BuddyPress.org

The reason you are getting nothing is that $user is not a global var in that template. I was getting nothing because of a bug. Specify the user var like this:

<?php

global $site_members_template;

xprofile_get_field_data(\"City\",$site_members_template->member->id);

?>

That is the current template user id. There is no template tag to just get the current template loop user id yet.