<![CDATA[This study examines traffic noise levels in the environment of SMP Mardisiswa 2 Semarang, focusing on variations in sound intensity caused by motor vehicles at different times of the day. The background of this research is the increasing concern over environmental noise pollution and its negative impact on students’ health and learning activities. The objective of this study is to analyze the sound intensity levels during morning, midday, and afternoon periods using a smartphone-based Sound Level Meter (SLM) application. The research employed a quantitative method, involving field measurements at 5-second intervals over a 10-minute duration for each time period. The collected data were then averaged and analyzed to identify temporal patterns. The results indicate that the highest average noise level occurs in the afternoon (75.286 dB), followed by the morning (74.674 dB), while the lowest occurs at midday (72.956 dB). These findings suggest that traffic volume significantly influences environmental noise levels, particularly during peak activity hours. The implication of this study highlights the need for noise mitigation strategies in school environments, such as vegetation barriers or spatial planning, to ensure a conducive learning atmosphere]]>
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