| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 35°F | 24°F | 0.8" |
| February | 18°F | 37°F | 27°F | 1.3" |
| March | 32°F | 54°F | 41°F | 2.5" |
| April | 42°F | 65°F | 52°F | 4.9" |
| May | 52°F | 73°F | 62°F | 5.8" |
| June | 63°F | 83°F | 72°F | 6.1" |
| July | 66°F | 87°F | 76°F | 3.9" |
| August | 64°F | 84°F | 74°F | 6.4" |
| September | 56°F | 77°F | 66°F | 3.7" |
| October | 44°F | 65°F | 54°F | 3.3" |
| November | 33°F | 52°F | 41°F | 2.2" |
| December | 21°F | 38°F | 28°F | 2.0" |
| Index | Eagleville | Missouri | National |
| Air quality index | 43 | 97 | 42 |
| Pollution index | 1,176,900 | 1,630,255 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 283 |
| Days with moderate air quality | 82 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Lamoni, IA | 2,412 | 39 | 22.0% |
| Pleasanton, IA | 52 | 39 | 22.0% |
| Davis City, IA | 263 | 39 | 22.0% |
| Blythedale, MO | 319 | 43 | 14.0% |
| Bethany, MO | 3,227 | 43 | 14.0% |
| Eagleville, MO | 373 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Hydaburg, AK | 373 | 20 | 60.0% |
| Poyen, AR | 373 | 38 | 24.0% |
| Kit Carson, CO | 373 | 20 | 60.0% |
| Worthington, IA | 373 | 29 | 42.0% |
| Nebo, IL | 373 | 41 | 18.0% |
| Eagleville, MO | 373 | 43 | 14.0% |