| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 41°F | 62°F | 50°F | 5.0" |
| February | 43°F | 65°F | 53°F | 5.4" |
| March | 51°F | 73°F | 61°F | 5.7" |
| April | 58°F | 79°F | 68°F | 6.1" |
| May | 64°F | 85°F | 74°F | 4.2" |
| June | 71°F | 91°F | 80°F | 4.4" |
| July | 73°F | 93°F | 82°F | 5.4" |
| August | 74°F | 94°F | 82°F | 5.5" |
| September | 69°F | 89°F | 77°F | 4.5" |
| October | 57°F | 81°F | 68°F | 7.3" |
| November | 49°F | 71°F | 58°F | 5.5" |
| December | 44°F | 63°F | 52°F | 5.6" |
| Index | New Llano | Louisiana | National |
| Air quality index | 30 | 106 | 42 |
| Pollution index | 1,206,820 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 119 |
| Days with good air quality | 107 |
| Days with moderate air quality | 12 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Anacoco, LA | 962 | 30 | 40.0% |
| Fort Polk North, LA | 2,400 | 30 | 40.0% |
| Fort Polk South, LA | 8,823 | 30 | 40.0% |
| Leesville, LA | 5,773 | 30 | 40.0% |
| Rosepine, LA | 1,776 | 45 | 10.0% |
| New Llano, LA | 2,777 | 30 | 40.0% |
| City | Population | Air Quality Index | National Avg. |
| Little Flock, AR | 2,776 | 44 | 12.0% |
| Emerson-Franklin, MB | 2,775 | n/a | |
| Chimayo, NM | 2,779 | 41 | 18.0% |
| Botwood, NL | 2,779 | n/a | |
| Meadow Glade, WA | 2,774 | 38 | 24.0% |
| New Llano, LA | 2,777 | 30 | 40.0% |
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