The negative effects of air pollution are that it can force illness on us. It can produce burning eyes and nose and an itchy, irritated throat, in addition to difficulty in breathing. The cause for certain diseases like cancer, birth defects, brain and nerve injury and long-standing wound to the lungs and breathing passages is found to be some chemicals in polluted air. Severe injury or even death can happen if some hazardous air pollutants are released by mistake. Air pollution affects environment. Air pollution also affects trees, lakes and animals. Air pollutants are contracting the shielding ozone layers above the Earth. This loss of ozone can lead to alterations in the environment in addition to more skin cancer and cataracts in people. By soiling buildings and other structures, air pollution spoils properties like home, offices, etc. Damages to stone based structures like buildings, monuments and statues take place as some widespread pollutants erode stone. Decrease in visibility due to smog caused by air pollution can affect national parks and at times meddle with aviation. (Why should you be concerned about air pollution?).

             The biggest segment of the nation's population occupies swiftly growing metropolitan and urban areas. The urbanization, industrial growth, and the enlarged use of motor vehicles has lead to an swell in air pollution, which in turn has produced hazards to the public health and welfare, including damage to agricultural crops and livestock, destruction to property, and threats to air and ground transportation. The most important responsibility of State and local governments is to put a stop to air pollution by controlling, minimizing or eradicating the quantity of pollutants formed or produced at a source. The federal Clean Air Act or CAA and its amendments provides the authority for programs executed by these agencies and these amendments were conceded to look after and improve air quality for the advantage of the country's public health, welfare, and industrial capacity.