Urban Air Pollution.

The Urban Air Pollution Transport Division is responsible for most of the air pollutants in our urban areas, such as carbon monoxide and nitrogen oxides that form terrestrial ozone. Tens of millions of Americans live in areas that do not meet at least one federal air quality standard. In 1990, Congress passed an amendment to the Atmosphere Cleanup Act to combat ground level ozone from high levels of carbon monoxide, nitrogen oxides, and petroleum based transportation fuels.

In Latin America and the Caribbean, city air pollution is getting worse. One reason is the rapid expansion of urban population. This phenomenon is related to industrial processes that are usually concentrated in cities and to main air pollution sources in Latin American cities plus the increase in vehicle number and energy efficiency. Air quality standards established in these countries are often exceeded despite implementation of management plans. Urban departments affected by the discharge of anthropogenic pollutants are Sao Paulo, Brazil, Santiago, Chile, and Mexico City.

Air pollution from the urban environment may damage the natural environment. Most of the air pollution is concentrated in the urban area and its surroundings, and the automobile and the industrial sector release large quantities of waste into the environment. Visible air pollution, or smoke, is found in almost all urbanized areas. Humans are not only adversely affected by bad air quality but animals are also affected. Air pollution may inhibit the growth of vegetation and reduce crop yields. Air pollution caused by human activities can harm all creatures in the urbanized world

In urbanization, all kinds of pollution are easily seen. In parallel with urbanization, air pollution, water pollution, noise pollution, light pollution and solid product waste are increasing mainly. Air quality in urban areas has declined due to population increase. Trucks, automobiles, factories are emitting large quantities of carbon dioxide into the atmosphere every day. The number of trucks, automobiles and factories is increasing in parallel with the population. As the urban population increases, clean water demand will increase. Due to the large population, local governments may not be able to provide adequate clean water to citizens. Therefore, water pollution occurs in urban areas. Another type of pollution is noise pollution. In our daily life, everyone is using a car. Especially in the city, the noise of the car is the simplest example of noise pollution. Noise can occur in cars, people, factories, and construction sites. Again, all of these are related to population growth.