🇺🇸 Chattanooga vs 🇲🇽 Mexico City

Chattanooga in the Tennessee River gorge is one of America's most dramatically positioned cities, surrounded by Lookout Mountain and Signal Mountain. The valley-and-ridge topography creates dramatic fog, temperature inversions, and storm channeling. The city was historically notorious for air pollution but has transformed into an outdoor recreation destination.

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.