Adrianti L, Tukiyat T, Makhsun M, Ubaya T. Nationwide PM2.5 Concentration Prediction in Indonesia Using GRU, GRU-Attention, and BiGRU-Attention Models with Sentinel-5P and ERA5-Land Data. Int. J. Softw. Eng. Comput. Sci. 2026;6(2):853-867. doi:10.35870/ijsecs.v6i2.7488