| Anna Nagar (S) | ||
| Months | Day | Night |
| Standard Limit in Leq dB(A) | 50 | 40 |
| January | 67 | 60 |
| Febraury | 67 | 62 |
| March | 67 | 62 |
| April | 67 | 63 |
| May | 65 | 61 |
| June | 65 | 59 |
| July | 66 | 57 |
| August | 67 | 59 |
| September | 67 | 61 |
| October | 66 | 55 |
| November | 67 | 57 |
| December | 67 | 58 |
| All Values are measured in Leq dB(A) | ||
| I= Industrial, C= Commercial, R= Residential, S= Silence | ||