| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 44°F | 70°F | 55°F | 1.2" |
| February | 48°F | 75°F | 60°F | 1.0" |
| March | 55°F | 82°F | 67°F | 1.7" |
| April | 62°F | 88°F | 74°F | 1.7" |
| May | 68°F | 93°F | 79°F | 3.3" |
| June | 73°F | 98°F | 85°F | 1.8" |
| July | 75°F | 99°F | 86°F | 3.2" |
| August | 75°F | 101°F | 87°F | 1.5" |
| September | 71°F | 95°F | 82°F | 3.2" |
| October | 63°F | 88°F | 74°F | 2.0" |
| November | 54°F | 79°F | 65°F | 0.7" |
| December | 46°F | 69°F | 56°F | 1.4" |
| Index | Carrizo Hill | Texas | National |
| Air quality index | 25 | 52 | 42 |
| Pollution index | 568,521 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 339 |
| Days with good air quality | 287 |
| Days with moderate air quality | 51 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Asherton, TX | 854 | 25 | 50.0% |
| Crystal City, TX | 7,473 | 25 | 50.0% |
| Brundage, TX | 0 | 25 | 50.0% |
| Loma Grande, TX | 326 | 25 | 50.0% |
| Carrizo Springs, TX | 5,616 | 25 | 50.0% |
| Carrizo Hill, TX | 1,510 | 25 | 50.0% |
| City | Population | Air Quality Index | National Avg. |
| Lanark, IL | 1,510 | 42 | 16.0% |
| Wurtland, KY | 1,510 | 14 | 72.0% |
| Broadway, NC | 1,510 | 29 | 42.0% |
| Leavittsburg, OH | 1,510 | 42 | 16.0% |
| Stratford, WI | 1,510 | 34 | 32.0% |
| Carrizo Hill, TX | 1,510 | 25 | 50.0% |