5Mexico City, Mexico
Mexico City has long struggled with pollution, due to its large population, heavy traffic, and geographical location in a valley surrounded by mountains, which traps pollutants. Air pollution is a significant problem, with high levels of ozone and particulate matter posing health risks to the city’s residents. Despite efforts to reduce emissions through vehicle regulations and public transportation improvements, the city still experiences frequent smog, particularly in the dry season. Additionally, waste management is a challenge, with landfills often overflowing and illegal dumping of trash contributing to unsanitary conditions.
