| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 63°F | 47°F | 1.7" |
| February | 40°F | 68°F | 52°F | 1.3" |
| March | 48°F | 74°F | 60°F | 1.6" |
| April | 56°F | 81°F | 67°F | 2.6" |
| May | 62°F | 85°F | 73°F | 6.7" |
| June | 70°F | 92°F | 80°F | 1.6" |
| July | 72°F | 94°F | 82°F | 1.2" |
| August | 72°F | 95°F | 82°F | 1.6" |
| September | 65°F | 89°F | 76°F | 3.2" |
| October | 56°F | 81°F | 67°F | 1.8" |
| November | 47°F | 71°F | 58°F | 1.6" |
| December | 39°F | 63°F | 49°F | 1.3" |
| Index | Kerrville | Texas | National |
| Air quality index | 49 | 52 | 42 |
| Pollution index | 24,182,700 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 196 |
| Days with moderate air quality | 163 |
| Days w/ poor A.Q. for sensitive groups | 5 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.310% |
| Benzene | 0.310% |
| Carbon Tetrachloride | 0.080% |
| Lead | 0.140% |
| Mercury | 0.230% |
| City | Population | Air Quality Index | National Avg. |
| Ingram, TX | 1,973 | 49 | 2.0% |
| Comfort, TX | 3,018 | 49 | 2.0% |
| Kerrville, TX | 23,511 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Anthem, AZ | 23,508 | 74 | 48.0% |
| Kingsville, ON | 23,502 | n/a | |
| Carteret, NJ | 23,501 | 51 | 2.0% |
| Apollo Beach, FL | 23,487 | 43 | 14.0% |
| Romulus, MI | 23,544 | 56 | 12.0% |
| Kerrville, TX | 23,511 | 49 | 2.0% |
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