You might try running the Goddard 'Standard Atmosphere' MSIS-E- 90 model at the NSSDC. If you select your latitude and longitude and have the program run out the parameters in altitude, you will get the temperature, pressure, and major atmospheric constituents as a function of altitude.
All answers are provided by Dr. Sten Odenwald (Raytheon STX)
for the
NASA IMAGE/POETRY
Education and Public Outreach program.