Major Causes of Mexico City’s Severe Air Pollution

Key Factors

1. High Traffic Density: Millions of vehicles; congestion increases emissions.
2. Inadequate Public Transit: Forces reliance on private cars.
3. Aging Vehicle Fleet: Older, inefficient engines emit more pollutants.
4. Geography & Climate: Valley surrounded by mountains traps pollutants; high altitude increases fuel combustion; thermal inversions lock smog near ground.
5. Industrial Activity: Factories release particulates, VOCs, toxics.
6. Deforestation / Low Green Cover: Reduced natural filtration.
7. Fuel Quality: High sulfur content worsens emissions.

Solutions Needed

Integrated policies: expand mass transit, enforce vehicle standards, improve fuel, reforest, regulate industry, public engagement.