It really depends on the humidity. 30 degrees in my dry hometown in central Spain is tolerable, 30 degrees with 90% humidity here in Japan where I live now is pure pain.
30C here in New Mexico outside is pretty tolerable (super low humidity, 6000'/3000m altitude). 30C in my office when I'm trying to think about anonymous closures is over the line.
30C here in New Mexico outside is pretty tolerable (super low humidity, 6000'/3000m altitude). 30C in my office when I'm trying to think about anonymous closures is over the line.