| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 42°F | 65°F | 53°F | 5.5" |
| February | 45°F | 68°F | 55°F | 3.7" |
| March | 51°F | 75°F | 62°F | 3.9" |
| April | 58°F | 80°F | 69°F | 4.4" |
| May | 65°F | 86°F | 75°F | 5.9" |
| June | 73°F | 92°F | 81°F | 5.7" |
| July | 75°F | 92°F | 82°F | 7.0" |
| August | 75°F | 93°F | 83°F | 7.9" |
| September | 70°F | 90°F | 79°F | 4.8" |
| October | 58°F | 84°F | 70°F | 4.2" |
| November | 49°F | 75°F | 61°F | 4.3" |
| December | 44°F | 67°F | 55°F | 5.2" |
| Index | Prien | Louisiana | National |
| Air quality index | 45 | 106 | 42 |
| Pollution index | 13,526,400 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 239 |
| Days with moderate air quality | 126 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.220% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.550% |
| Lead | 0.060% |
| Mercury | 0.670% |
| City | Population | Air Quality Index | National Avg. |
| Hackberry, LA | 1,315 | 45 | 10.0% |
| Westlake, LA | 4,788 | 45 | 10.0% |
| Lake Charles, LA | 77,832 | 45 | 10.0% |
| Carlyss, LA | 5,185 | 45 | 10.0% |
| Moss Bluff, LA | 10,352 | 45 | 10.0% |
| Prien, LA | 8,469 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Park City, UT | 8,467 | 51 | 2.0% |
| Absecon, NJ | 8,471 | 37 | 26.0% |
| Sunset Hills, MO | 8,466 | 54 | 8.0% |
| Oak Hills Place, LA | 8,472 | 45 | 10.0% |
| Woodmoor, CO | 8,474 | 45 | 10.0% |
| Prien, LA | 8,469 | 45 | 10.0% |
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