| Anna Nagar (S) | ||
| Months | Day | Night |
| Standard Limit in Leq dB(A) | 50 | 40 |
| January | 64 | 54 |
| Febraury | 64 | 54 |
| March | 66 | 57 |
| April | 68 | 63 |
| May | 69 | 66 |
| June | 68 | 63 |
| July | 67 | 63 |
| August | 69 | 72 |
| September | 73 | 80 |
| October | 67 | 66 |
| November | 65 | 54 |
| December | 69 | 58 |
| All Values are measured in Leq dB(A) | ||
| I= Industrial, C= Commercial, R= Residential, S= Silence | ||