This study is aimed to investigate spatial and seasonal variations of air pollutants in Istanbul between 2007 and 2017. Target air pollutants were carbon monoxide, particulate matter, sulfur dioxide, nitrogen oxides, and ozone. Air quality data of the city of Istanbul were obtained from 31 continuous air quality monitoring stations located at the Anatolian and the European Sides of the city. Spatial and temporal variations of the air pollutants were assessed by statistical methods (p < 0.05). According to the results of this study, all air pollutants showed seasonal variations and all parameters were found to be higher during the heating periods than other periods (p < 0.05), except for ozone. The annual average values of carbon monoxide, particulate matter with diameter of less than 10 µm, sulfur dioxide, ozone, and nitrogen dioxide (except for nitrogen dioxide levels measured in 2017) concentrations were below the national limit values in all stations between 2007 and 2017. In terms of yearly variation of the air pollutants, carbon monoxide and ozone showed statistically significant increasing trends (p < 0.001). Overall, once ten-years average air quality data were compared with current air quality limit values which was effective since 2019, PM and NO₂ may have limit exceedance problems in the next years. Moreover, levels of particulate matter with diameter of less than 2.5 µm were measured at 3 air quality monitoring stations, exceeded both World Health Organization and European Union limit values. Furthermore, positive correlations were found among the air pollutants (p < 0.001).

本研究旨在调查2007年至2017年之间伊斯坦布尔空气污染物的空间和季节变化。目标空气污染物为一氧化碳，颗粒物，二氧化硫，氮氧化物和臭氧。伊斯坦布尔市的空气质量数据是从位于该市安纳托利亚人和欧洲人的31个连续的空气质量监测站获得的。通过统计方法评估了空气污染物的时空变化（p  <0.05）。根据这项研究的结果，所有空气污染物均表现出季节变化，并且在供暖期间所有参数均高于其他时期（p <0.05），但臭氧除外。一氧化碳，直径小于10微米的颗粒物，二氧化硫，臭氧和二氧化氮（2017年测得的二氧化氮水平除外）的年均浓度低于2007年至2017年所有站点的国家限值。就空气污染物的年度变化而言，一氧化碳和臭氧在统计上显示出显着的增长趋势（p  <0.001）。总体而言，将十年平均空气质量数据与自2019年起生效的当前空气质量限值进行比较，PM和NO ₂在接下来的几年中可能会有极限超出问题。此外，在3个空气质量监测站测量的直径小于2.5 µm的颗粒物含量超过了世界卫生组织和欧盟的限值。此外，在空气污染物之间发现正相关（p  <0.001）。