| Anna Nagar (S) | ||
| Months | Day | Night |
| Standard Limit in Leq dB(A) | 50 | 40 |
| January | 67 | 56 |
| Febraury | 67 | 57 |
| March | 67 | 59 |
| April | 68 | 60 |
| May | 68 | 66 |
| June | 68 | 64 |
| July | 76 | 77 |
| August | 71 | 64 |
| September | 64 | 61 |
| October | 66 | 62 |
| November | 63 | 57 |
| December | 54 | 53 |
| All Values are measured in Leq dB(A) | ||
| I= Industrial, C= Commercial, R= Residential, S= Silence | ||