| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 43°F | 60°F | 51°F | 7.2" |
| February | 44°F | 63°F | 53°F | 7.2" |
| March | 51°F | 73°F | 61°F | 7.0" |
| April | 54°F | 77°F | 65°F | 5.8" |
| May | 63°F | 86°F | 74°F | 5.2" |
| June | 70°F | 92°F | 80°F | 4.4" |
| July | 73°F | 90°F | 80°F | 7.2" |
| August | 73°F | 95°F | 82°F | 11.7" |
| September | 69°F | 91°F | 79°F | 8.1" |
| October | 55°F | 82°F | 67°F | 1.2" |
| November | 50°F | 73°F | 60°F | 4.7" |
| December | 42°F | 65°F | 52°F | 6.4" |
| Index | Cheneyville | Louisiana | National |
| Air quality index | 30 | 106 | 42 |
| Pollution index | 1,945,770 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 119 |
| Days with good air quality | 107 |
| Days with moderate air quality | 12 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Cottonport, LA | 1,792 | 30 | 40.0% |
| Marksville, LA | 5,376 | 30 | 40.0% |
| Lecompte, LA | 811 | 30 | 40.0% |
| Evergreen, LA | 282 | 30 | 40.0% |
| Woodworth, LA | 2,019 | 30 | 40.0% |
| Cheneyville, LA | 789 | 30 | 40.0% |
| City | Population | Air Quality Index | National Avg. |
| Leighton, AL | 789 | 37 | 26.0% |
| New Hartford, IA | 789 | 39 | 22.0% |
| Bartelso, IL | 789 | 43 | 14.0% |
| Livingston, IL | 789 | 54 | 8.0% |
| St. Joseph, LA | 789 | 34 | 32.0% |
| Cheneyville, LA | 789 | 30 | 40.0% |
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