Asking for leave

It's very hot today in Beijing andmy office doesn't have air conditioning. Moreover my seat is in front of the windows, so the sun shines directly on my back, which makes me uncomfortable.  I feel sick and think if I go on working maybe I'll get sunstroke.
After some hesitation, I decided to ask for leave. Now I woke up and much felt better than 3 hours ago. I hope my property company will supply cool air as soon as possible!

Asking to leave -> don't know what you mean, but I think you want to quit your job, so you are writing a resign letter? I am going to do some corrections on this letter, if you have any questions please comment.

It's very hot today in Beijing, and it doesn't supply cool air at office, my seat is in front of the windows, so the sun shines directly to my back, which makes me uncomfortable, I feel sick, if I go to work, maybe I will get a sun burn (instead of sunstroke.) 
After I hesitate, I decided to quit. Now I wake up and feel better than 3 hours ago. I wish property company could supply cool air as soon as possible!