by fredo on Mon May 30, 2016 4:15 am
Slight clarification- temps don't usually change the amount of water in the air (aka the absolute humdity). Instead, the relative humidity (% of water in the air relative to the amount that could be in it) changes as the temp goes up/down. Hot air can hold more vapor than cold.
Feel free to ignore this:
For example, and pulling numbers outta my butt, if you say the air temp is 80F/27C and the amount of water vapor is 3 and that the air can hold 6 vapor, then this equates to 50% relative humidity at 80F. As the air cools X won't change but the % will rise as the capacity to hold it drops until it reaches 100% (3) aka saturation....aka the dew point. Then you get condensation. And that's how your mother and I made you.