| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 43°F | 32°F | 3.2" |
| February | 26°F | 45°F | 34°F | 2.2" |
| March | 37°F | 59°F | 47°F | 4.0" |
| April | 46°F | 68°F | 56°F | 4.7" |
| May | 55°F | 76°F | 65°F | 5.6" |
| June | 65°F | 85°F | 74°F | 5.1" |
| July | 67°F | 89°F | 77°F | 5.0" |
| August | 67°F | 89°F | 77°F | 3.8" |
| September | 59°F | 79°F | 68°F | 6.9" |
| October | 46°F | 66°F | 55°F | 4.3" |
| November | 38°F | 58°F | 47°F | 2.6" |
| December | 26°F | 44°F | 34°F | 2.5" |
| Index | Newburg | Missouri | National |
| Air quality index | 39 | 97 | 42 |
| Pollution index | 344,982 | 1,630,255 | 2,726,193 |
| Measurement | Total |
| Days measured | 245 |
| Days with good air quality | 238 |
| Days with moderate air quality | 7 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| St. Robert, MO | 6,193 | 39 | 22.0% |
| Edgar Springs, MO | 151 | 39 | 22.0% |
| Doolittle, MO | 489 | 39 | 22.0% |
| Fort Leonard Wood, MO | 14,779 | 39 | 22.0% |
| Rolla, MO | 20,273 | 39 | 22.0% |
| Newburg, MO | 290 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| San Miguel, AZ | 290 | 31 | 38.0% |
| Iron Horse, CA | 290 | 44 | 12.0% |
| Alma, CO | 290 | 47 | 6.0% |
| Offerle, KS | 290 | 15 | 70.0% |
| Queen Anne town, MD | 290 | 36 | 28.0% |
| Newburg, MO | 290 | 39 | 22.0% |
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