The cities that have the worst air pollution is Pittsburgh and Los Angeles
Mexico City
Vehicles and heavy industry (steel, glass, textile and chemical plants are the worst offenders) are the top contributors to bad air quality in Mexico City.
The city of Los Angeles is generally considered to have America's worst air pollution problem. Most of California's metro areas have bad air pollution.
El Paso!
sex
New York, Las Vegas, Hollywood, Nevada, and so many more!
the pollution in the air
Not at all.
America
they go to smoke weed
coal
Mexico city has terrible air quality. They are plagued by smog, as well as all types of chemicals in the air. This has given them a bad climate, and terrible air pollution.