You can't use this from a browser, but if you enable temperature alerts from the app or My D-Link, you can pull temp readouts from the following URL:
http://CAMIP/users/notify_stream.cgi
You need to pass your auth credentials in the header, if successful you'll get a stream that spits out temps every second. It looks like this:
tpC=22
tpF=71
tpC=22
tpF=71
tpC=22
tpF=71
tpC=22
tpF=71
tpC=22
tpF=71
Here's an example of how to view the output using cURL. You'll need to replace the auth header with a hash that matches your credentials:
curl -X GET -H "Authorization: Basic YOURPASSHASHHERE” "http://CAMIP/users/notify_stream.cgi"