– You can use PRTG to monitor SNMP capable access points and many other web enabled devices remotely. Creates a local install on windows which can be logged into remotely or even send you email alerts if something goes wrong.
You can also get 30 sensors for free vs only 10 for the normal freeware version if you share a link on your blog as explained here: http://www.paessler.com/prtg/prtgbanners hence this page.
I do like the software and it was easy to setup, creates nice traffic graphs over the long term with minimal fuss.