Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan
Vol 22, No 3 (2025): November 2025

Comparing K-Means and K-Medoids for Industrial Air Pollution Analysis in Central Java

Putri, Rani Rachma Astining (Unknown)
Fajri, Roifah (Unknown)
Suhardono, Sapta (Unknown)
Candraningtyas, Callista Fabiola (Unknown)
Septiariva, Iva Yenis (Unknown)



Article Info

Publish Date
30 Nov 2025

Abstract

Air is a fundamental necessity for all living beings, especially humans. However, human activities whether intentional or unintentional can degrade air quality through pollution. This study compares the performance of the K-Means and K-Medoids clustering algorithms in analyzing the air pollution load from the industrial sector in Central Java in 2021. Using a quantitative approach and R Studio software, the analysis focuses on SO₂ and NO₂ pollution data obtained from the official Central Java BPS website. The results indicate that the K-Medoids algorithm with the silhouette method yields the most optimal clustering performance, with the lowest Davies-Bouldin Index (DBI) value of 0.6201437 and 10 distinct clusters. Notably, Cluster 1 comprises districts with the highest industrial air pollution burden such as Banjarnegara Regency, which recorded 14,472 industries and NO₂ and SO₂ concentrations of 20 μg/m³ and 6 μg/m³, respectively. These findings demonstrate that clustering algorithms not only help reveal spatial pollution patterns but also provide critical insights for prioritizing targeted mitigation efforts and informing environmental policy-making in industrially active regions.

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