Irjayana, R.C. , Fadlil, A. and Umar, R. 2025. Air Quality Index Classification: Feature Selection for Improved Accuracy with Multinomial Logistic Regression. Jurnal Teknik Informatika (Jutif). 6, 5 (Oct. 2025), 3265–3279. DOI:https://doi.org/10.52436/1.jutif.2025.6.5.5155.