🇲🇽 Mexico City vs 🇮🇹 Milan

Subtropical highland — mild year-round due to altitude, distinct wet season

Mexico City's high altitude (7,350 ft/2,240m) keeps temperatures surprisingly mild year-round. Days are typically 65–75°F; nights cool significantly. The rainy season (May–October) brings afternoon thunderstorms. Air quality is a year-round concern due to the enclosed valley.

Milan sits in the western Po Valley, one of Europe's most fog-prone and humidity-trapping basins, hemmed in by the Alps to the north and the Apennines to the south. The city experiences hot, humid summers with weak ventilation and cold, damp winters where temperature inversions trap pollution and moisture at ground level. The Navigli canal system and proximity to several pre-Alpine lakes introduce subtle moisture gradients, while the dense urban core generates one of Italy's strongest urban heat island effects.