Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's also called smog.
Some air pollutants are poisonous. Inhaling them can increase the chance you'll have health problems. People with heart or lung disease, older adults and children are at greater risk from air pollution. Air pollution isn't just outside - the air inside buildings can also be polluted and affect your health.
Environmental Protection Agency
Air pollution can have many environmental effects. Air pollution has affects the global climate by causing global warming. Also, Air pollution thins out the protective ozone layer resulting in increased access to harmful ultraviolet rays on the earth's surface. Air pollution also damages crops and forest. Due to the increased level of nitrogen oxides and sulfur oxides, there have been many incidences of acid rain. Due to air pollution, may water bodies contain high concentrations of nutrients that stimulate algae's growth, which in turn can kill fish. Reference 1. Health & Environmental Effects of Air Pollution. Department of Environmental Protection. URL: https://www.mass.gov/files/documents/2016/08/vl/health-and-env-effects-air-pollutions.pdf. Accessed July 02, 2018.