| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 43°F | 32°F | 0.7" |
| February | 26°F | 47°F | 35°F | 1.3" |
| March | 38°F | 60°F | 48°F | 2.2" |
| April | 48°F | 70°F | 58°F | 3.9" |
| May | 57°F | 77°F | 67°F | 5.0" |
| June | 68°F | 88°F | 78°F | 5.6" |
| July | 72°F | 91°F | 81°F | 4.7" |
| August | 70°F | 90°F | 79°F | 5.1" |
| September | 62°F | 82°F | 71°F | 4.3" |
| October | 49°F | 70°F | 59°F | 3.5" |
| November | 38°F | 59°F | 48°F | 1.5" |
| December | 27°F | 45°F | 35°F | 1.2" |
| Index | Pleasant Valley | Missouri | National |
| Air quality index | 47 | 97 | 42 |
| Pollution index | 7,087,670 | 1,630,255 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 210 |
| Days with moderate air quality | 154 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 1.360% |
| Lead | 0.040% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Excelsior Estates, MO | 304 | 47 | 6.0% |
| Excelsior Springs, MO | 11,688 | 47 | 6.0% |
| Fairway, KS | 3,975 | 47 | 6.0% |
| Mission Hills, KS | 3,563 | 47 | 6.0% |
| Westwood, KS | 1,746 | 47 | 6.0% |
| Pleasant Valley, MO | 3,017 | 47 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Platteville, CO | 3,017 | 45 | 10.0% |
| Oostburg, WI | 3,017 | 38 | 24.0% |
| Fairview CDP, NC | 3,016 | 49 | 2.0% |
| Bakerstown, PA | 3,016 | 56 | 12.0% |
| Combes, TX | 3,016 | 44 | 12.0% |
| Pleasant Valley, MO | 3,017 | 47 | 6.0% |
Here are the best places to live in Missouri
See the best places to live in Pleasant Valley
Check out the 10 safest cities in Missouri
These are the largest cities in Missouri