Air pollution is one of the important environmental problems that affect people directly or indirectly socio-economically. The quality of the air we breathe affects our health, safety, comfort and sustainable life. One of the major air pollutants in city centers is carbon monoxide (CO) emission from vehicles. Inhalation of high concentrations is a health hazard.
In this study CO measurement values between the hours of 2016 and 2020 were analyzed in terms of air quality in İstanbul, which is Turkey and Europe's largest in terms of population, while the 15 largest mega city in the world It was taken into consideration that the data of 19 different stations would be appropriate after the data was first passed through quality control in terms of method.
Atmospheric CO varies in time and space scales depending on both the amount of emission and meteorological conditions. In order to see the change in time oscillation about city air pollution, the CO air quality data of the last 5 years, as well as human activities in some months of 2020, have changed within the framework of the Covid-19 pandemic measures, so the previous 2016- 2019 values were compared with the data of 2020. As a result of the analyzes obtained, it has been revealed that atmospheric CO values in Istanbul show significant variation in time and space scales.