DPCC report: 19 of 26 Delhi areas saw higher Diwali noise levels; Karol Bagh hit 89.1 dB(A). Overall range 57.5–89.1 dB(A). Karol Bagh recorded the highest level at 89.1 dB(A), while Sonia Vihar saw the sharpest annual increase. Delhi noise levels rose in 19 of 26 areas during Diwali, with Karol Bagh recording the highest reading at 89.1 dB(A), DPCC data shows.