| 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
These are the 10 cheapest cities in Indiana
Most Dangerous States In The US
See the best places to live in Monroeville