The EPA calculates the health quality of the nation's air by measuring five pollutants regulated by the Clean Air Act. These chemicals are air particles in general, plus carbon monoxide, sulfur dioxide, ground-level ozone, and nitrogen dioxide. All these are connected with national air quality standards set in the Clean Air Act. Of this group of pollutants, particles and ozone are considered the two biggest dangers to health in America.
Paying attention to the Air Quality Index in your area may raise serious concerns about your health. Fortunately, the EPA publishes tips on how you can contribute to the quality of air in your city. The website can be a major help when trying to reduce emissions and create a healthier atmosphere