| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 37°F | 58°F | 46°F | 9.6" |
| February | 40°F | 62°F | 50°F | 5.0" |
| March | 48°F | 72°F | 59°F | 5.1" |
| April | 55°F | 79°F | 66°F | 8.5" |
| May | 63°F | 85°F | 73°F | 9.9" |
| June | 71°F | 92°F | 80°F | 6.7" |
| July | 72°F | 94°F | 82°F | 9.9" |
| August | 72°F | 95°F | 81°F | 8.7" |
| September | 67°F | 91°F | 77°F | 2.5" |
| October | 55°F | 80°F | 66°F | 11.9" |
| November | 46°F | 69°F | 56°F | 8.5" |
| December | 41°F | 61°F | 49°F | 4.8" |
| Index | Kilbourne | Louisiana | National |
| Air quality index | 34 | 106 | 42 |
| Pollution index | 222,404 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 335 |
| Days with moderate air quality | 28 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.004% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Forest, LA | 357 | 34 | 32.0% |
| Oak Grove, LA | 1,733 | 34 | 32.0% |
| Lake Providence, LA | 2,586 | 34 | 32.0% |
| Parkdale, AR | 269 | 34 | 32.0% |
| Eudora, AR | 2,246 | 43 | 14.0% |
| Kilbourne, LA | 274 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Wilmar, AR | 274 | 35 | 30.0% |
| Top-of-the-World, AZ | 274 | 60 | 20.0% |
| Manlius, IL | 274 | 42 | 16.0% |
| Perry, IL | 274 | 41 | 18.0% |
| Grinnell, KS | 274 | 15 | 70.0% |
| Kilbourne, LA | 274 | 34 | 32.0% |
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