| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 48°F | 40°F | 9.1" |
| February | 34°F | 51°F | 41°F | 3.8" |
| March | 43°F | 66°F | 54°F | 6.1" |
| April | 49°F | 70°F | 59°F | 9.6" |
| May | 59°F | 83°F | 70°F | 1.7" |
| June | 68°F | 91°F | 79°F | 6.4" |
| July | 71°F | 90°F | 79°F | 8.1" |
| August | 74°F | 96°F | 84°F | 8.8" |
| September | 65°F | 87°F | 75°F | 4.9" |
| October | 52°F | 75°F | 62°F | 11.5" |
| November | 42°F | 63°F | 52°F | 6.2" |
| December | 32°F | 50°F | 40°F | 6.0" |
| Index | Leachville | Arkansas | National |
| Air quality index | 26 | 38 | 42 |
| Pollution index | 1,119,950 | 1,487,822 | 2,726,193 |
| Measurement | Total |
| Days measured | 360 |
| Days with good air quality | 341 |
| Days with moderate air quality | 19 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.270% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Dell, AR | 207 | 26 | 48.0% |
| Rives, MO | 103 | 26 | 48.0% |
| Monette, AR | 1,514 | 26 | 48.0% |
| Manila, AR | 3,340 | 26 | 48.0% |
| Senath, MO | 1,721 | 26 | 48.0% |
| Leachville, AR | 2,498 | 26 | 48.0% |
| City | Population | Air Quality Index | National Avg. |
| Spring Mount, PA | 2,498 | 42 | 16.0% |
| Scott, QC | 2,498 | n/a | |
| Dufferin, MB | 2,498 | n/a | |
| Lawai, HI | 2,497 | 13 | 74.0% |
| Garrettsville, OH | 2,497 | 43 | 14.0% |
| Leachville, AR | 2,498 | 26 | 48.0% |
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