Air pollution is one of the greatest problems nowadays because it can cause numerous health problems, especially in urban areas. There was invented special Air Quality Index by EPA to measure the air quality and find out six major air pollutants, which influence our health. The two pollutants, ground-level ozone and airborne particles, endanger our lives greatly. Ground-level ozone can be the reason of such a disease as asthma, and it can easily increase the number of asthma attacks. It happens because ozone reduces lung functions and the person can feel shortness of breath, wheeze or tightness in the chest. It is one of the main irritators of the respiratory system and, as a result, it causes coughing, sore throat and other irrigative feelings