Given aircraft and runway characteristics, how do you compute the maximum temperature for take-off? Consider an airport e.g. Phoenix Sky Harbor International Airport (PHX), with Maximum runway length (ft) of 11500 and Elevation (ft) of 1135. For Boeing 737 whose Maximum takeoff weight is 174,200 lbs, How do you compute the maximum/optimum temperature for takeoff
Well, there is some subjectivity here, but I consider the optimum temperature for takeoff to be 72-degrees Farenheit.

As far as the outside temperature is concerned, there is no specific optimum. In general, colder is better.