| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 44°F | 31°F | 2.0" |
| February | 23°F | 47°F | 33°F | 2.1" |
| March | 35°F | 61°F | 46°F | 3.0" |
| April | 44°F | 71°F | 57°F | 5.7" |
| May | 53°F | 78°F | 65°F | 4.3" |
| June | 63°F | 87°F | 75°F | 4.8" |
| July | 67°F | 90°F | 78°F | 5.1" |
| August | 65°F | 89°F | 76°F | 3.9" |
| September | 57°F | 82°F | 69°F | 4.8" |
| October | 45°F | 71°F | 57°F | 3.9" |
| November | 35°F | 59°F | 46°F | 2.4" |
| December | 25°F | 45°F | 34°F | 2.7" |
| Index | Farber | Missouri | National |
| Air quality index | 38 | 97 | 42 |
| Pollution index | 964,937 | 1,630,255 | 2,726,193 |
| Measurement | Total |
| Days measured | 245 |
| Days with good air quality | 239 |
| Days with moderate air quality | 6 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.130% |
| Mercury | 0.120% |
| City | Population | Air Quality Index | National Avg. |
| Martinsburg, MO | 577 | 38 | 24.0% |
| Wellsville, MO | 1,149 | 38 | 24.0% |
| Middletown, MO | 216 | 38 | 24.0% |
| Benton City, MO | 139 | 38 | 24.0% |
| Rush Hill, MO | 183 | 38 | 24.0% |
| Farber, MO | 406 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Kennedy, AL | 406 | 35 | 30.0% |
| Leavenworth, IN | 406 | 6 | 88.0% |
| Wayland, KY | 406 | 45 | 10.0% |
| Wilbur Park, MO | 406 | 54 | 8.0% |
| Rensselaer Falls, NY | 406 | 35 | 30.0% |
| Farber, MO | 406 | 38 | 24.0% |
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