| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 46°F | 63°F | 54°F | 5.7" |
| February | 46°F | 66°F | 55°F | 7.9" |
| March | 49°F | 72°F | 60°F | 4.8" |
| April | 55°F | 77°F | 65°F | 8.3" |
| May | 62°F | 84°F | 72°F | 19.9" |
| June | 70°F | 89°F | 79°F | 8.0" |
| July | 73°F | 90°F | 80°F | 10.8" |
| August | 74°F | 92°F | 82°F | 6.9" |
| September | 71°F | 90°F | 80°F | 4.9" |
| October | 58°F | 81°F | 68°F | 9.5" |
| November | 50°F | 75°F | 61°F | 2.1" |
| December | 44°F | 67°F | 54°F | 6.1" |
| Index | Lacombe | Louisiana | National |
| Air quality index | 45 | 106 | 42 |
| Pollution index | 4,700,710 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 229 |
| Days with moderate air quality | 134 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.030% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Mandeville, LA | 12,567 | 30 | 40.0% |
| Abita Springs, LA | 2,571 | 30 | 40.0% |
| Covington, LA | 10,471 | 30 | 40.0% |
| Madisonville, LA | 1,263 | 30 | 40.0% |
| Nicholson, MS | 2,477 | 45 | 10.0% |
| Lacombe, LA | 7,294 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| West Concord, MA | 7,294 | 43 | 14.0% |
| Olivarez, TX | 7,293 | 42 | 16.0% |
| Garden Home-Whitford, OR | 7,295 | 38 | 24.0% |
| Northport, NY | 7,297 | 43 | 14.0% |
| North Amherst, MA | 7,290 | 40 | 20.0% |
| Lacombe, LA | 7,294 | 45 | 10.0% |
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