pres_height

Pressure	Approximate Height		Approximate Temperature*
1013 mb	0 m (sea level)	0 ft	15 C	59 F
1000 mb	100 m	300 ft	15 C	59 F
850 mb	1500 m	5000 ft	5 C	41 F
700 mb	3000 m	10000 ft	-5 C	23 F
500 mb	5000 m	18000 ft	-20 C	-4 F
300 mb	9000 m	30000 ft	-45 C	-49 F
200 mb	12000 m	40000 ft	-55 C	-67 F
100 mb	16000 m	53000 ft	-56 C	-69 F

* temperature according to the International Civil Aviation Organization Standard Atmosphere

conversions:

1 ft = 0.3048 m or 1 m = 3.28 ft
1'' Hg = 33.87 mb
Fahrenheit temperatures Tf can be converted to Celsius temperatures Tc by the following equation:

To get °C --> Tc = 5(Tf - 32)/9
To get °F --> Tf = 32 + 1.8 ´ Tc