Air Quality Data provided by: the Turkey National Air Quality Monitoring Network (Ulusal Hava Kalitesi İzleme Ağı) (sim.csb.gov.tr)
Note that the measurement for O3 (ozone) are taken from the station: Kocaeli Yenikoy and the measurements for NO2 (nitrogen dioxide) and CO (carbon monoxide) are taken from the station: Kocaeli Izmit and the measurement for SO2 (sulfur dioxide) are taken from the station: Kocaeli Alikahya