Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 44°F | 64°F | 54°F | 4.1" |
February | 48°F | 67°F | 57°F | 3.7" |
March | 54°F | 73°F | 64°F | 3.8" |
April | 60°F | 79°F | 70°F | 5.1" |
May | 67°F | 84°F | 76°F | 6.4" |
June | 73°F | 90°F | 81°F | 5.9" |
July | 74°F | 90°F | 82°F | 5.9" |
August | 75°F | 91°F | 82°F | 7.1" |
September | 71°F | 88°F | 79°F | 3.9" |
October | 61°F | 81°F | 70°F | 3.8" |
November | 51°F | 73°F | 61°F | 2.6" |
December | 47°F | 67°F | 56°F | 7.6" |
Index | Gretna | Louisiana | National |
Air quality index | 45 | 106 | 42 |
Pollution index | 3,881,730 | 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 | 0.000% |
Benzene | 0.040% |
Carbon Tetrachloride | 0.002% |
Lead | 0.010% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Bridge City, LA | 6,409 | 45 | 10.0% |
Jean Lafitte, LA | 2,329 | 45 | 10.0% |
Metairie, LA | 138,511 | 45 | 10.0% |
Arabi, LA | 4,207 | 45 | 10.0% |
Meraux, LA | 8,187 | 45 | 10.0% |
Gretna, LA | 17,746 | 45 | 10.0% |
City | Population | Air Quality Index | National Avg. |
Maitland, FL | 17,749 | 39 | 22.0% |
Lackawanna, NY | 17,751 | 39 | 22.0% |
Ocean Springs, MS | 17,756 | 42 | 16.0% |
Ferndale, MD | 17,732 | 46 | 8.0% |
Miramichi, NB | 17,761 | n/a | |
Gretna, LA | 17,746 | 45 | 10.0% |