Air Temperature and Altitude

Altitude and air temperature and air density

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The standard values for pressure, temperature and density (ignoring the slight effect of humidity) at altitudes from sea level to 16,000 feet (about 4900 m).

Altitude
(feet)		 Pressure
(in. Hg)		 Temp.
(F)		 Density
(%)
sea level 29.92 59.0 100
2,000 27.82 51.9 94.3
4,000 25.84 44.7 88.8
6,000 23.98 37.6 83.6
8,000 22.22 30.5 78.6
10,000 20.57 23.3 73.8
12,000 19.02 16.2 69.3
14,000 17.57 9.1 65.0
16,000 16.21 1.9 60.9
  • 1 ft (foot) = 0.3048 m
  • 1 in mercury (Hg) = 3,376.8 N/m2 (Pa)= 0.49 lb/in2 (psi) = 12.8 in water
  • T(oC) = 5/9[T(oF) - 32]

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