I'm currently playing with relative air humidity and temperature sensor that makes measurements in my living room once every 60s. When plotted the data on a chart I noticed that spikes and dips of humidity very closely correlate with events in the room: i can clearly see a spike when I wake up in the morning and do myself a cup of tea or take shower. Similarly, the chart line plummets when i leave the house. On the other hand temp data doesn't seem to show any response to the events in the room.
The question is: how the speed of moisture traveling in air is defined? When a kettle in one corner of a room starts to boil, how soon will this be detected by a sensor in the opposite corner?