Air Temperature and Altitude

Altitude - air temperature and air density

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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
2000	27.82	51.9	94.3
4000	25.84	44.7	88.8
6000	23.98	37.6	83.6
8000	22.22	30.5	78.6
10000	20.57	23.3	73.8
12000	19.02	16.2	69.3
14000	17.57	9.1	65.0
16000	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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