| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 37°F | 66°F | 50°F | 2.9" |
| February | 41°F | 71°F | 54°F | 1.7" |
| March | 48°F | 77°F | 62°F | 3.9" |
| April | 55°F | 83°F | 69°F | 3.2" |
| May | 63°F | 89°F | 75°F | 6.1" |
| June | 71°F | 95°F | 82°F | 3.2" |
| July | 72°F | 98°F | 84°F | 2.9" |
| August | 73°F | 99°F | 85°F | 2.6" |
| September | 67°F | 94°F | 79°F | 4.8" |
| October | 56°F | 86°F | 69°F | 4.1" |
| November | 47°F | 76°F | 60°F | 2.4" |
| December | 39°F | 67°F | 52°F | 2.5" |
| Index | Manchaca | Texas | National |
| Air quality index | 44 | 52 | 42 |
| Pollution index | 713,830 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 249 |
| Days with moderate air quality | 114 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Buda, TX | 16,484 | 44 | 12.0% |
| Hays, TX | 141 | 44 | 12.0% |
| Shady Hollow, TX | 3,833 | 44 | 12.0% |
| Barton Creek, TX | 2,395 | 44 | 12.0% |
| Mustang Ridge, TX | 1,229 | 44 | 12.0% |
| Manchaca, TX | 1,370 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Waldo, AR | 1,370 | 35 | 30.0% |
| Mexico Beach, FL | 1,370 | 38 | 24.0% |
| Holstein, IA | 1,370 | 35 | 30.0% |
| High Rolls, NM | 1,370 | 10 | 80.0% |
| Orange Grove, TX | 1,370 | 30 | 40.0% |
| Manchaca, TX | 1,370 | 44 | 12.0% |
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