| Perambur (C) | ||
| Months | Day | Night |
| Standard Limit in Leq dB(A) | 65 | 55 |
| January | 76 | 79 |
| Febraury | 73 | 73 |
| March | 71 | 71 |
| April | 81 | 83 |
| May | 76 | 77 |
| June | 74 | 76 |
| July | 77 | 79 |
| August | 78 | 78 |
| September | 69 | 69 |
| October | 69 | 68 |
| November | 71 | 72 |
| December | 74 | 77 |
| All Values are measured in Leq dB(A) | ||
| I= Industrial, C= Commercial, R= Residential, S= Silence | ||