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General Data > Temperature Milestones

The table below shows a selection of temperature milestones. These may be useful for producing display work.

Fahrenheit (°F) Celsius °C) Kelvin (K) Event, location, phenomena, process
    ~1032 planck temperature, upper limit of temperature
    ~1016 hottest laboratory experiment (Fermilab)  
    ~109 core of hottest stars  
    ~107 core of the sun  
    ~107 nuclear explosion  
    ~106 solar corona (the sun's atmosphere)  
    25,000 surface of blue stars
    24,000 lightning bolt
    6000 centre of earth
    5933 tungsten boils
    5800 surface of the sun
    3683 tungsten melts
    3500 surface of red stars
4900 2700 3000 incandescent light bulb
3100 1700 2000 typical flames
2200 1200 1500 fresh lava
1984.32 1084.62 1357.77 copper melting point
1947.52 1064.18 1337.33 gold melting point
1763.20 961.78 1234.93 silver melting point
1250 680 950 dull red hot
1220.58 660.323 933.473 aluminium melting point
930 500 770 incipient red heat
850 460 730 mean surface temperature on Venus
840 450 720 daytime surface temperature on Mercury
787.149 419.527 692.677 zinc melting point
674 357 630 mercury boils
621 327 600 lead melts
574.5875 301.4375 574.5875 fahrenheit and kelvin scales coincide
530 280 550 very hot home oven
451 233 506 paper burns (according to Bradbury)
449.470 231.928 505.078 tin melting point
313.8773 156.5985 429.7485 Indium melting point
212 100 373.15 water boils
136 58 331 hottest surface temperature on earth ( Libya 1922)
98.6 37.0 310.2 human body (traditional US)
98.2 36.8 309.9 human body (revised)
96     human body (according to Fahrenheit)
85.5763 29.7646 302.9146 gallium melts
    300 quick approximation of room temperature
59 15 288 mean surface temperature on earth
32.018 0.01 273.16 water triple point
32 0 273.15 water freezes
0 −18 255 ice-water-salt mixture (according to Fahrenheit)
−37.9019 −38.8344 234.3156 mercury triple point
−38 −39 234 mercury melting point
−40 −40 233 fahrenheit and celsius scales coincide
−56 −49 220 mean surface temperature on Mars
−108 −78 195 sublimation point of dry ice
−128 −89 184 coldest surface temperature on earth (Vostok 1983)
−300 −180 90 nighttime surface temperature on Mercury
−279 −183 90 oxygen liquefies
−308.8196 −189.3442 83.8058 argon triple point
−320 −196 77 nitrogen liquefies
    54.3584 oxygen triple point
    50 mean surface temperature on Pluto
    24.5561 neon triple point
    20.3 hydrogen liquefies
    13.8033 hydrogen triple point
    4.22 helium liquefies
    2.73 mean temperature of the universe
    2.174 helium I −- helium II λ point (0.050 atm)
    ~1 coldest point in space (Boomerang Nebula)
    0.95 helium freezes (26 atm)
    10−10 coldest laboratory experiment (Helsinki Tech)  
−459.67 −273.15 0 absolute zero


Fixed points are denoted in red text.