How much does an Assoc. Professor - Mechanical Engineering make in Arizona? The average Assoc. Professor - Mechanical Engineering salary in Arizona is $94,067 as of November 25, 2019, but the range typically falls between $80,813 and $120,001. Salary ranges can vary widely depending on the city and many other important factors, including education, certifications, additional skills, the number of years you have spent in your profession.