Air pollution is one of the most serious environmental problems in today’s world. Except for occasional natural events such as volcanic eruptions and wildfires, human activities are the sole contributor for the disastrous levels of particulate matter that is present in the air. Air pollution is the presence of excessive biological or chemical compounds in the air due to many things such as transportation, industrialization, agriculture, dust, household energy consumption, waste production and so on. Ozone emission is a major part of air pollution in cities and creates smog. In general, a modern life style and urbanization has resulted in more than 91% of the world’s population living in places where the air quality is detrimental to health.