| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 43°F | 62°F | 52°F | 4.0" |
| February | 46°F | 66°F | 55°F | 5.6" |
| March | 53°F | 72°F | 62°F | 7.2" |
| April | 60°F | 78°F | 68°F | 6.6" |
| May | 66°F | 84°F | 75°F | 6.0" |
| June | 72°F | 89°F | 80°F | 10.2" |
| July | 73°F | 89°F | 81°F | 6.3" |
| August | 74°F | 91°F | 82°F | 12.7" |
| September | 70°F | 87°F | 77°F | 4.6" |
| October | 60°F | 81°F | 69°F | 9.9" |
| November | 52°F | 72°F | 61°F | 8.3" |
| December | 46°F | 64°F | 54°F | 6.2" |
| Index | Buna | Texas | National |
| Air quality index | 45 | 52 | 42 |
| Pollution index | 1,518,140 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 234 |
| Days with moderate air quality | 122 |
| Days w/ poor A.Q. for sensitive groups | 8 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Deweyville, TX | 661 | 45 | 10.0% |
| Mauriceville, TX | 2,856 | 45 | 10.0% |
| Evadale, TX | 1,648 | 45 | 10.0% |
| Silsbee, TX | 6,642 | 45 | 10.0% |
| Kirbyville, TX | 2,519 | 45 | 10.0% |
| Buna, TX | 1,908 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Joseph City, AZ | 1,908 | 44 | 12.0% |
| Laurel Springs, NJ | 1,908 | 51 | 2.0% |
| Flying Hills, PA | 1,908 | 42 | 16.0% |
| Desoto Lakes, FL | 1,907 | 38 | 24.0% |
| Sigourney, IA | 1,909 | 35 | 30.0% |
| Buna, TX | 1,908 | 45 | 10.0% |
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