Tehran University of Medical Sciences Journal of Air Pollution and Health 2476-3071 3 4 2018 12 09 225 234 Ali Ahmad Fazeli Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Zohreh Hesami Environment and Sustainable Development, Department of Tehran Municipality, Tehran, Iran Ali Ghanbari Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Mohammad Safari Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Mohammad Sadegh Hassanvand Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran 2018 10 21 2018 12 04 Introduction: The importance of air quality and paying attention to what we breathe have been valuable always. So that air pollution is one of the key environmental issues in urban communities. Several studies show that the potential effects of air pollution on human health include increased mortality and changes in cardiovascular and respiratory functions. Materials and methods: The population of this study was people in 22 districts of Tehran megacity. The questionnaires were placed at the municipality centers of 22 districts and randomly completed by people who came to the center. Questions included the importance of air pollution, the comparison of air quality with last year, the main sources of air pollution, the problems created by air pollution, the quality of informing system, as well as questions about their satisfaction about government’s actions on air pollution control plans. Data analysis was performed using SPSS 24. Results: 84.14 % of the participants stated that air pollution is important to them and has a negative influence on their lives. Also, most of them were not satisfied with the measures taken and expected that actions would be better to reduce air pollution. 91.10 % of the participants considered cars as the main causes of air pollution. Also, 68.22 % of people believed that air pollution had a significant negative impact on their quality of life. Conclusion: Most people are willing to live at a higher cost but a less polluted environment, while more of them are not well aware of their role in reducing air pollution. Moreover further education should be provided on the role of people in reducing air pollution. Additionally, the government must deal with air pollutants and take serious measures. https://japh.tums.ac.ir/index.php/japh/article/view/185 https://japh.tums.ac.ir/index.php/japh/article/download/185/194