Why Is It Colder At The Top Of A Mountain, If You’re Closer To The Sun?

As the Sun is around 150 million kilometers away, even being on top of Everest only brings you 9 km closer – far too small a difference to make you feel any warmer. The distance effect is totally overwhelmed by that of having less atmosphere around you as you climb.  This leads to a steady fall in atmospheric pressure, and – as the air isn’t so compressed – a fall in temperature as well. The rate of decline is surprisingly fast: around 1°C for every 100m, and continues all the way up to the so-called tropopause around 12km above the Earth.


The Sun won’t warm you up if atmospheric pressure is low




  • Bob Tucker Jun 30, 2016 at 3:49 am

    At altitude the boiling point for liquids drops drastically, any moisture on the body can be catastrophic.