| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 67°F | 51°F | 1.3" |
| February | 44°F | 72°F | 56°F | 1.0" |
| March | 51°F | 78°F | 63°F | 2.1" |
| April | 59°F | 85°F | 70°F | 1.8" |
| May | 65°F | 89°F | 76°F | 4.1" |
| June | 71°F | 95°F | 82°F | 2.1" |
| July | 73°F | 96°F | 84°F | 2.5" |
| August | 73°F | 98°F | 85°F | 1.8" |
| September | 69°F | 93°F | 80°F | 2.5" |
| October | 59°F | 85°F | 71°F | 1.9" |
| November | 50°F | 76°F | 61°F | 1.1" |
| December | 42°F | 67°F | 53°F | 1.2" |
| Index | Hondo | Texas | National |
| Air quality index | 49 | 52 | 42 |
| Pollution index | 233,769 | 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 | 0.000% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| D'Hanis, TX | 484 | 49 | 2.0% |
| Hondo, TX | 9,321 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Northwest Harborcreek, PA | 9,321 | 36 | 28.0% |
| Sellersburg, IN | 9,320 | 49 | 2.0% |
| Brentwood, PA | 9,319 | 56 | 12.0% |
| Flossmoor, IL | 9,318 | 55 | 10.0% |
| Walnut Grove, WA | 9,324 | 38 | 24.0% |
| Hondo, TX | 9,321 | 49 | 2.0% |
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