| 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 | 832 | 25 | 50.0% |
| Crystal City, TX | 7,256 | 25 | 50.0% |
| Brundage, TX | 0 | 25 | 50.0% |
| Loma Grande, TX | 318 | 25 | 50.0% |
| Carrizo Springs, TX | 5,421 | 25 | 50.0% |
| Carrizo Hill, TX | 1,479 | 25 | 50.0% |
| City | Population | Air Quality Index | National Avg. |
| Salem, NC | 1,479 | 43 | 14.0% |
| Grand Ronde, OR | 1,479 | 32 | 36.0% |
| Calvert, TX | 1,479 | 38 | 24.0% |
| Strong, ON | 1,479 | n/a | |
| Akron, IA | 1,478 | 35 | 30.0% |
| Carrizo Hill, TX | 1,479 | 25 | 50.0% |
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