Originally posted by ysterbaardby that reasoning 100% humidity would be water!!
When the weather report say: " the humidity is 70% today, but tomorrow it should be 50%" Does it mean the 50% of the air is made up by water molecules? Or is it entirely something else? this might be a dumb question and no I haven't wiki'd it yet.
Yes. That's why I want to know what is the meaning of the term "50% humidity" and how is it calculated. And what happens at 100%. Obviously it cannot be that at 100% humidity air turns into water. Except if you go by wheight. Where a drop of water weighs as much as a whole lot of air. So if at 100% humidity a raindrop falls out of the sky. Still I would like a proper answer.
Originally posted by mtthwYes. At 100% humidity, it starts to rain. The actual amount of water air can hold is temperature and pressure dependent; that's why sunny weather tends to coincide with high pressure.
http://en.wikipedia.org/wiki/Humidity#Relative_humidity
I think that means it's the percentage of the maximum level of humidity that the air could sustain at that temperature.
Originally posted by KazetNagorraSo the part of rain that actually contains the water would be a lot more than 100% humid wouldn't it?
Yes. At 100% humidity, it starts to rain. The actual amount of water air can hold is temperature and pressure dependent; that's why sunny weather tends to coincide with high pressure.