# Moisture Ratio in Air

• Vector1962

#### Vector1962

Homework Statement
Why do moisture ratio tables related to temperature, humidity and dew point only go up to about 50 deg C?
Relevant Equations
N/A
Wondering why moisture ratio tables related to temperature and air only go up to roughly 50 C or so? is that temperature a "boundary" on the amount of water air can hold?

Problem Statement: Why do moisture ratio tables related to temperature, humidity and dew point only go up to about 50 deg C?
Relevant Equations: N/A

Wondering why moisture ratio tables related to temperature and air only go up to roughly 50 C or so? is that temperature a "boundary" on the amount of water air can hold?
My guess is that since humidity and dew points are weather related, the graphs and tables would only display "Earthly" weather values.
According to my googling, a place called Dallol Ethiopia is the hottest location in the world:
Record high: 49°C​
Average high: 46.7°C​

I'm not sure why anyone but scientists would want to know what the values are above 50°C.
Given the linearity of the graph at wiki regarding Dew Points, without even doing any maths, my guess is that 50°C is not a boundary.
Guessing that 100°C might be considered a boundary though, at atmospheric pressure.

I appreciate your reply. I don't really consider myself a scientist but rather more curious concerning the values between 50C and 100C. Seems like with the amount of information currently available regarding water that the tables and graphs would routinely go to 100C . Don't suppose you have any idea where to get one?... maybe a CRC chem book?

I appreciate your reply. I don't really consider myself a scientist but rather more curious concerning the values between 50C and 100C. Seems like with the amount of information currently available regarding water that the tables and graphs would routinely go to 100C . Don't suppose you have any idea where to get one?... maybe a CRC chem book?
This calculator seems to give similar results as my interpolation/eyeballing of the wiki dew point graph, up to 100°C.
(Within 4.1% of each other from 20 to 100% RH)