| Velachery (R) | ||
| Months | Day | Night |
| Standard Limit in Leq dB(A) | 55 | 45 |
| January | 67 | 66 |
| Febraury | 67 | 67 |
| March | 69 | 65 |
| April | 67 | 58 |
| May | 65 | 57 |
| June | 65 | 58 |
| July | 65 | 58 |
| August | 65 | 57 |
| September | 64 | 58 |
| October | 64 | 57 |
| November | 63 | 57 |
| December | 63 | 56 |
| All Values are measured in Leq dB(A) | ||
| I= Industrial, C= Commercial, R= Residential, S= Silence | ||