| Anna Nagar (S) | ||
| Months | Day | Night |
| Standard Limit in Leq dB(A) | 50 | 40 |
| January | 70 | 71 |
| Febraury | 74 | 74 |
| March | 74 | 74 |
| April | 66 | 64 |
| May | 74 | 74 |
| June | 78 | 78 |
| July | 68 | 68 |
| August | 68 | 68 |
| September | 70 | 70 |
| October | 69 | 67 |
| November | 63 | 61 |
| December | 58 | 57 |
| All Values are measured in Leq dB(A) | ||
| I= Industrial, C= Commercial, R= Residential, S= Silence | ||