©2020 Te Academy of Environmental Biology, India Journal of Ecophysiology and Occupational Health, Vol 20(1&2), DOI: 10.18311/jeoh/2020/24730, 1–5, January–June 2020 ISSN (Print): 0972-4397 ISSN (Online): 0974-0805 Air Pollution from Trafc at Major Causeway Al-Khobar, Saudi Arabia Khaled F. Salama 1 , Mubashir Zafar 2 , Dulaim Abdullah Alrabea 3 , Abdullah Ali Alqahtani 3 , Suhaib Abdulaziz Almarghoub 3 and Ali Abdullah Alshehri 3* 1 Assistant Professor, Department of Environmental Health, College of Public Health, Imam Abdul Rahman Bin Faisal University, Saudi Arabia; ksalama@iau.edu.sa 2 Assistant Professor, Department Public Health, College of Public Health, Imam Abdul Rahman Bin Faisal University, Saudi Arabia; mzzahmed@iau.edu.sa 3 Department of Environmental Health, College of Public Health, Imam Abdul Rahman Bin Faisal University, Saudi Arabia; Dulaim11@outlook.com, Env.abdullah@hotmail.com, Suhaib.almarghoub@gmail.com, Alialshehrii07@gmail.com Abstract Introduction: Causeway is providing a road link between travelers from Al-Khobar, Saudi Arabia and Bahrain. The vehicle traffic noise and emissions exhaust at Causeway have a significant effect on air quality parameters which leads to deteriorations impact on health of employees and passengers. The present study aimed to analyze the ambient air pollutants PM10, PM2.5, PM1, O 3 , CO 2 , SO 2 , CO, VOCs, and NO 2 , ambient noise and heat stress in and around causeway. Materials and Methods: All gaseous, particulate air pollutants, meteorological factors, ambient noise and heat stress were analyzed using standards calibrated equipment. July 2019 to October 2019 the study incused seven administrative sites in King Fahd causeway (Saudi Side). Air Quality Index (AQI) was used to determine the concentrations of selected ambient air pollutants. Results: All major air pollutants were high and significant difference in the concentration level between weekdays and weekends (p<0.05) and exceeds the international air quality guidelines in the selected studied sites of causeways. However, ambient noise demonstrated high significant levels in different studied sites in different times (p<0.05). Conclusion: Air quality measures in Causeway are significantly deteriorated and should be continuously evaluated to minimize the risk of daily exposure to traffic emissions. 1. Introduction Air quality is one of the basic indicators for environment quality. All urban cities afected by air pollution due to trafc, industries 1 . All developed and specifcally developing countries have experienced air pollution because of increasing trafc in all roads in the major urban cities 2 . Population living in these urban cities has high chances of worse health impacts 3-5 . Previous decades major cause of air pollution by industrial fumes and fossil fuel burning but now trafc is the major source of air pollution especially in major highways 6 . Air pollution caused by trafc which is contributing to severe health impacts such as cancers and ear problems and also efect daily activity 7 . Emission from trafc due to trafc congestion and vehicle moving at slow speed are the major factors 8 . Air pollution from trafc have major public health problem and it is associated with asthma and cardiovascular disease and increase no. of patients visited the emergency department of all hospitals. Te particles which contributed these health impacts are Particulate Matter (PM), Volatile Organic Compounds (VOCs) sulfur dioxide (SO 2 ), and carbon monoxide (CO). Te most common age group afected is from children and older people 9 . It is estimated 2.4 million deaths per year worldwide due to air pollution from trafc 10 . It is estimated that 50% of world population living in urban cities. Tese pollutants afected the health of urban cities population. Exhaust emissions from vehicle produce pollutants such as carbon monoxide (CO), Particulate Matter (PM), carbon dioxide (CO), hydrocarbons (HC), Sulfur dioxide (SO 2 ), Volatile Organic Compounds (VOC), and nitrogen oxides (NOx) 11 . Te route of bus feets represent a substantial portion within the city trafc 11 . When driver drive the vehicle and there is rush and trafc jam, they exposed to high concentration of pollutants 12 . Now days the auto manufacturers used latest technology for engine specifcation for reduce the emission but still this pollutants comes from emission which is in the nanoparticle size range less than 50 PM 13 . *Author for correspondence Keywords: Air, Ambient, Gaseous, Pollutants, Quality