| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 35°F | 26°F | 2.9" |
| February | 18°F | 37°F | 27°F | 2.4" |
| March | 28°F | 51°F | 39°F | 3.1" |
| April | 38°F | 65°F | 51°F | 4.0" |
| May | 49°F | 75°F | 62°F | 4.9" |
| June | 59°F | 84°F | 71°F | 5.1" |
| July | 62°F | 86°F | 74°F | 4.1" |
| August | 60°F | 84°F | 72°F | 4.4" |
| September | 53°F | 79°F | 65°F | 3.3" |
| October | 42°F | 67°F | 53°F | 2.9" |
| November | 31°F | 53°F | 42°F | 3.2" |
| December | 23°F | 39°F | 31°F | 3.1" |
| Index | Monroeville | Indiana | National |
| Air quality index | 45 | 56 | 42 |
| Pollution index | 951,494 | 2,719,453 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 236 |
| Days with moderate air quality | 128 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Ohio City, OH | 730 | 39 | 22.0% |
| Van Wert, OH | 10,531 | 39 | 22.0% |
| Decatur, IN | 9,700 | 45 | 10.0% |
| Scott, OH | 268 | 45 | 10.0% |
| Fort Wayne, IN | 268,378 | 45 | 10.0% |
| Monroeville, IN | 1,315 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Salome, AZ | 1,315 | 13 | 74.0% |
| Redway, CA | 1,315 | 27 | 46.0% |
| Hackberry, LA | 1,315 | 45 | 10.0% |
| Coloma, MI | 1,315 | 39 | 22.0% |
| Bonnetsville, NC | 1,315 | 41 | 18.0% |
| Monroeville, IN | 1,315 | 45 | 10.0% |
Here are the best places to live in Indiana
Safest States In The US
Safest Cities In The US
See the best places to live in Monroeville