What traps air pollution in Mexico Cityt?

Mexico City is prone to air pollution due to several factors, including its geographic location and prevailing weather conditions. The city lies within a high-altitude valley surrounded by mountains, creating a natural basin that traps pollutants. The city's high elevation and lack of air circulation can result in a buildup of various air pollutants, including particulate matter, ozone, and carbon monoxide. Additionally, Mexico City's high population density and the intense traffic contribute significantly to air pollution levels.