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| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 44°F | 32°F | 1.0" |
| February | 26°F | 46°F | 34°F | 1.3" |
| March | 38°F | 60°F | 48°F | 2.5" |
| April | 47°F | 70°F | 57°F | 4.4" |
| May | 57°F | 77°F | 66°F | 4.2" |
| June | 67°F | 87°F | 76°F | 4.7" |
| July | 70°F | 90°F | 79°F | 3.6" |
| August | 67°F | 89°F | 77°F | 2.3" |
| September | 59°F | 81°F | 69°F | 3.7" |
| October | 48°F | 70°F | 58°F | 3.7" |
| November | 38°F | 58°F | 47°F | 2.4" |
| December | 28°F | 45°F | 35°F | 1.8" |
| Index | Sedalia | Missouri | National |
| Air quality index | 38 | 97 | 42 |
| Pollution index | 2,921,360 | 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 | 0.002% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.070% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| Ionia, MO | 75 | 38 | 24.0% |
| Green Ridge, MO | 473 | 38 | 24.0% |
| Houstonia, MO | 246 | 38 | 24.0% |
| Otterville, MO | 354 | 38 | 24.0% |
| Hughesville, MO | 206 | 38 | 24.0% |
| Sedalia, MO | 21,634 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Gallup, NM | 21,637 | 17 | 66.0% |
| Coralville, IA | 21,630 | 35 | 30.0% |
| Lealman, FL | 21,621 | 43 | 14.0% |
| Albertville, AL | 21,620 | 43 | 14.0% |
| Prichard, AL | 21,618 | 42 | 16.0% |
| Sedalia, MO | 21,634 | 38 | 24.0% |
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