From Inside Higher ED:
A new analysis of faculty salaries at public universities worldwide — designed to make comparisons possible by focusing on purchasing power, not pure salaries — finds that Canada offers the best faculty pay among 28 countries analyzed.
Canada comes out on top for those newly entering the academic profession, average salaries among all professors and those at the senior levels. In terms of average faculty salaries based on purchasing power, the United States ranks fifth, behind not only its northern neighbor, but also Italy, South Africa and India.
Monthly average salaries of public higher education faculty — using U.S. PPP Dollars: