| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 47°F | 63°F | 54°F | 5.2" |
| February | 50°F | 66°F | 57°F | 5.6" |
| March | 57°F | 73°F | 64°F | 5.4" |
| April | 64°F | 79°F | 71°F | 7.6" |
| May | 71°F | 85°F | 77°F | 5.1" |
| June | 77°F | 90°F | 83°F | 6.2" |
| July | 79°F | 91°F | 84°F | 6.7" |
| August | 79°F | 91°F | 85°F | 8.7" |
| September | 76°F | 88°F | 82°F | 5.8" |
| October | 67°F | 80°F | 73°F | 3.6" |
| November | 57°F | 71°F | 63°F | 2.1" |
| December | 51°F | 65°F | 57°F | 6.2" |
| Index | Chalmette | Louisiana | National |
| Air quality index | 45 | 106 | 42 |
| Pollution index | 2,751,420 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 229 |
| Days with moderate air quality | 134 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Elmwood, LA | 6,099 | 45 | 10.0% |
| Jefferson, LA | 10,286 | 45 | 10.0% |
| Arabi, LA | 4,207 | 45 | 10.0% |
| Meraux, LA | 8,187 | 45 | 10.0% |
| Timberlane, LA | 10,498 | 45 | 10.0% |
| Chalmette, LA | 23,111 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Farragut, TN | 23,110 | 46 | 8.0% |
| Union Hill-Novelty Hill, WA | 23,114 | 45 | 10.0% |
| Taylors, SC | 23,107 | 46 | 8.0% |
| The Crossings, FL | 23,102 | 41 | 18.0% |
| Owen Sound, ON | 23,125 | n/a | |
| Chalmette, LA | 23,111 | 45 | 10.0% |
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