| Perambur (C) | ||
| Months | Day | Night |
| Standard Limit in Leq dB(A) | 65 | 55 |
| January | 71 | 62 |
| Febraury | 71 | 61 |
| March | 74 | 62 |
| April | 72 | 63 |
| May | 71 | 63 |
| June | 71 | 63 |
| July | 74 | 68 |
| August | 71 | 66 |
| September | 72 | 62 |
| October | 73 | 63 |
| November | 74 | 70 |
| December | 75 | 77 |
| All Values are measured in Leq dB(A) | ||
| I= Industrial, C= Commercial, R= Residential, S= Silence | ||