Mexico City is north of the Tropic of Capricorn.
The angular separation is ~42.87° of latitude—approximately 4,760 km (2,960 miles). Mexico City lies in the northern tropics (between Tropic of Cancer at 23.44° N and Equator), while the Tropic of Capricorn marks the southern tropics boundary, crossing Chile, Argentina, Paraguay, Brazil, Namibia, Botswana, South Africa, Mozambique, Madagascar, and Australia.
Mexico City's high elevation (2,240 m / 7,350 ft) gives it a subtropical highland climate—mild year-round—despite its tropical latitude.