If you have a temperature Sensor pushing data to Paraimpu then connect it to a generic Actuator which accepts numeric data, then...
...discover this very nice new Temperature Web widget, developed for Paraimpu by Brendan Nee of blinktag.com during the nice WoT2011 hackathon session in San Francisco.
Configure the widget choosing the preferred Units and setting your specific Actuactor token, it immediately begins showing the temperature values forwarded for you by Paraimpu.
The widget exploits the HTML 5 local storage features to save the specified token locally to your browser.
Thanks Brendan for such a nice widget, it was a pleasure to hack with you!