| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 42°F | 67°F | 53°F | 2.4" |
| February | 47°F | 71°F | 57°F | 1.2" |
| March | 54°F | 78°F | 64°F | 2.5" |
| April | 60°F | 84°F | 71°F | 2.4" |
| May | 67°F | 89°F | 77°F | 4.4" |
| June | 73°F | 95°F | 83°F | 1.8" |
| July | 75°F | 97°F | 84°F | 2.3" |
| August | 75°F | 99°F | 86°F | 2.9" |
| September | 71°F | 93°F | 81°F | 3.2" |
| October | 62°F | 86°F | 73°F | 2.4" |
| November | 53°F | 76°F | 63°F | 1.5" |
| December | 45°F | 67°F | 55°F | 1.8" |
| Index | Jefferson-Woodlawn Lake | San Antonio | Texas |
| Air quality index | 49 | 49 | 52 |
| Pollution index | 24,182,700 | 24,182,700 | 2,009,300 |
| 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. |
| China Grove, TX | 1,239 | 49 | 2.0% |
| Shavano Park, TX | 3,874 | 49 | 2.0% |
| Castle Hills, TX | 4,459 | 49 | 2.0% |
| Helotes, TX | 9,525 | 49 | 2.0% |
| Elmendorf, TX | 1,583 | 49 | 2.0% |
| San Antonio, TX | 1,529,133 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Philadelphia, PA | 1,581,531 | 51 | 2.0% |
| San Diego, CA | 1,414,545 | 64 | 28.0% |
| Phoenix, AZ | 1,658,422 | 74 | 48.0% |
| Calgary, AB | 1,371,990 | n/a | |
| Dallas, TX | 1,338,846 | 51 | 2.0% |
| San Antonio, TX | 1,529,133 | 49 | 2.0% |
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