The Mosque in Saudi Arabia is one of the most important and prominent urban monuments in the neighborhood. The mosques have recently witnessed a remarkable development in audio and sound systems. In addition, with the increasing number of mosques in one neighborhood, the residents sometimes complain about the high level of sound. This research aims to measure the sound level and study the factors that affect the noise in the interior and outdoor environment, as well as health and management. The research methodology relies on the use of a device to measure the sound level inside and outside the mosque. It relies on the design and distribution of a questionnaire to the prayers at different times during the day and at peak times such as Friday and prayers on the days of Eid al-Fitr and Eid al-Adha. Three case studies were selected in Al Rwadah neighborhood in Riyadh. The result shows that the sound level in the indoor environment is above (60 to 80) dB which exceeds the limit and the sound level in the outdoor environment is between (50 to 60) dB which is within the limit. The conclusion in architectural techniques is to reduce the level of noise inside and outside the mosque. The results of the research will be applied in standards to manage the high sound level and maintain it inside the mosques by using smart devices.