Air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. These particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires. The solid and liquid particles suspended in our air are called aerosols.
A major contributor to air pollution is the exhaust from all of our cars and trucks. All over Texas vehicles contribute as much as half of the harmful air emissions that create air pollution.
One vehicle in bad repair can produce 28 times as much pollution as one vehicle in good repair.