| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 59°F | 47°F | 5.0" |
| February | 41°F | 62°F | 50°F | 4.1" |
| March | 48°F | 71°F | 59°F | 5.9" |
| April | 56°F | 79°F | 66°F | 6.0" |
| May | 63°F | 85°F | 73°F | 4.7" |
| June | 71°F | 92°F | 81°F | 3.8" |
| July | 73°F | 94°F | 82°F | 3.9" |
| August | 73°F | 95°F | 82°F | 4.3" |
| September | 67°F | 90°F | 77°F | 4.2" |
| October | 54°F | 80°F | 66°F | 5.4" |
| November | 46°F | 69°F | 56°F | 4.1" |
| December | 40°F | 61°F | 49°F | 5.5" |
| Index | Monroe | Louisiana | National |
| Air quality index | 34 | 106 | 42 |
| Pollution index | 4,786,940 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 335 |
| Days with moderate air quality | 28 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.030% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Calhoun, LA | 265 | 34 | 32.0% |
| Sterlington, LA | 2,753 | 34 | 32.0% |
| Swartz, LA | 5,176 | 34 | 32.0% |
| Claiborne, LA | 11,904 | 34 | 32.0% |
| West Monroe, LA | 12,431 | 34 | 32.0% |
| Monroe, LA | 47,906 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Jeffersonville, IN | 47,932 | 49 | 2.0% |
| Minot, ND | 47,834 | 36 | 28.0% |
| Niagara Falls, NY | 47,978 | 39 | 22.0% |
| Dublin, OH | 47,824 | 46 | 8.0% |
| Covina, CA | 47,787 | 89 | 78.0% |
| Monroe, LA | 47,906 | 34 | 32.0% |
Here are the best places to live in Louisiana
Check out the 10 safest cities in Louisiana
These are the 10 cheapest cities in Louisiana
Most Dangerous States In The US