| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 61°F | 48°F | 2.3" |
| February | 42°F | 65°F | 52°F | 1.7" |
| March | 50°F | 73°F | 61°F | 3.2" |
| April | 58°F | 80°F | 68°F | 2.7" |
| May | 65°F | 86°F | 75°F | 3.7" |
| June | 74°F | 94°F | 84°F | 3.8" |
| July | 77°F | 98°F | 87°F | 1.6" |
| August | 77°F | 99°F | 88°F | 1.6" |
| September | 70°F | 92°F | 81°F | 2.8" |
| October | 59°F | 82°F | 70°F | 3.5" |
| November | 49°F | 71°F | 60°F | 2.8" |
| December | 40°F | 61°F | 49°F | 2.2" |
| Index | Willow Park | Texas | National |
| Air quality index | 33 | 52 | 42 |
| Pollution index | 453,692 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 329 |
| Days with moderate air quality | 33 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.005% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Lake Worth, TX | 4,932 | 33 | 34.0% |
| Annetta, TX | 3,178 | 33 | 34.0% |
| Hudson Oaks, TX | 2,613 | 33 | 34.0% |
| Western Lake, TX | 509 | 33 | 34.0% |
| Sanctuary, TX | 252 | 33 | 34.0% |
| Willow Park, TX | 5,585 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| Cresaptown, MD | 5,584 | 36 | 28.0% |
| Falcon Heights, MN | 5,586 | 46 | 8.0% |
| Henryetta, OK | 5,586 | 43 | 14.0% |
| Siesta Key, FL | 5,587 | 38 | 24.0% |
| Paoli, PA | 5,591 | 51 | 2.0% |
| Willow Park, TX | 5,585 | 33 | 34.0% |
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