At which temperature freezes the own breath?

[MirrorOfEmotions]

Hi, as you can see it on the title, I would like to know at which degree the own breath starts to freeze.
I work on a character profile and in one of the chapters the protagonist enters a planet where his body and breath start to freeze. I tried to find an answer on my own, but it was unsuccessful. The best source I could find was a YouTube video which linked a website in its description which once contained these values, but when I looked into it, it seems it was deleted.
Then I found a forum where it was said that 58 Kelvin, which would be -215.15 °C, would be the value where oxygen freezes. However, this was just this one forum and I thought it wouldn't be accepted by this community, which is why I didn't take it in my profile.

And that's why I'm here now. I hope I'm not too annoying or intrusive. I'm really just curious and want to make an accurate profile, nothing else.

So, I hope it is ok that I post my question here.

 

[Sus]

since exhaled air is nitrogen – 78% oxygen – 17% carbon dioxide – 4%
i think you take the lowest freezing temp of the three (?) which is oxygen −218.79c
nitrogen is -210c, and it's the largest part, idk which u should pick but they're pretty close anyway

 

[MirrorOfEmotions]

since exhaled air is nitrogen – 78% oxygen – 17% carbon dioxide – 4%
i think you take the lowest freezing temp of the three (?) which is oxygen −218.79c
nitrogen is -210c, and it's the largest part, idk which u should pick but they're pretty close anyway

Thanks for the answer!
That helps a lot. In this case, I think I will orientate myself on the nitrogen measurement.
Thanks again.

 

[Sus]

actually i found a better answer

since compounds have different freezing points than their components (idk how i forgot that, I'm bad at science), air actually freezes at −213.2 °C

 

[MirrorOfEmotions]

Thanks!