| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 47°F | 64°F | 55°F | 8.4" |
| February | 48°F | 66°F | 56°F | 7.8" |
| March | 53°F | 73°F | 62°F | 4.1" |
| April | 57°F | 79°F | 67°F | 4.2" |
| May | 66°F | 86°F | 75°F | 7.6" |
| June | 73°F | 91°F | 81°F | 9.3" |
| July | 75°F | 92°F | 82°F | 7.2" |
| August | 75°F | 93°F | 83°F | 5.6" |
| September | 72°F | 90°F | 80°F | 10.4" |
| October | 60°F | 82°F | 69°F | 5.3" |
| November | 52°F | 74°F | 61°F | 5.4" |
| December | 45°F | 68°F | 55°F | 4.4" |
| Index | New Iberia | Louisiana | National |
| Air quality index | 41 | 106 | 42 |
| Pollution index | 1,607,140 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 280 |
| Days with moderate air quality | 85 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Delcambre, LA | 2,079 | 41 | 18.0% |
| Youngsville, LA | 14,118 | 41 | 18.0% |
| Loreauville, LA | 778 | 41 | 18.0% |
| Broussard, LA | 12,248 | 41 | 18.0% |
| Erath, LA | 2,286 | 41 | 18.0% |
| New Iberia, LA | 28,965 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Port Huron, MI | 28,918 | 56 | 12.0% |
| Ridgecrest, CA | 28,905 | 67 | 34.0% |
| Fredericksburg, VA | 29,059 | 47 | 6.0% |
| Rexburg, ID | 29,064 | 43 | 14.0% |
| SeaTac, WA | 29,102 | 45 | 10.0% |
| New Iberia, LA | 28,965 | 41 | 18.0% |
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