| Velachery (R) | ||
| Months | Day | Night |
| Standard Limit in Leq dB(A) | 55 | 45 |
| January | 73 | 65 |
| Febraury | 74 | 66 |
| March | 73 | 67 |
| April | 74 | 67 |
| May | 74 | 69 |
| June | 74 | 70 |
| July | 74 | 68 |
| August | 80 | 76 |
| September | 77 | 73 |
| October | 74 | 67 |
| November | 74 | 67 |
| December | 88 | 82 |
| All Values are measured in Leq dB(A) | ||
| I= Industrial, C= Commercial, R= Residential, S= Silence | ||