| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 37°F | 59°F | 46°F | 1.4" |
| February | 41°F | 63°F | 50°F | 1.4" |
| March | 49°F | 71°F | 59°F | 2.2" |
| April | 56°F | 77°F | 66°F | 3.4" |
| May | 64°F | 84°F | 73°F | 3.1" |
| June | 72°F | 93°F | 82°F | 1.7" |
| July | 75°F | 96°F | 84°F | 1.0" |
| August | 75°F | 97°F | 85°F | 1.3" |
| September | 69°F | 90°F | 78°F | 1.0" |
| October | 57°F | 80°F | 67°F | 2.4" |
| November | 48°F | 69°F | 57°F | 2.2" |
| December | 39°F | 59°F | 47°F | 2.9" |
| Index | Keene | 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. |
| Briaroaks, TX | 718 | 33 | 34.0% |
| Joshua, TX | 7,818 | 33 | 34.0% |
| Grandview, TX | 2,051 | 33 | 34.0% |
| Covington, TX | 311 | 33 | 34.0% |
| Burleson, TX | 47,151 | 33 | 34.0% |
| Keene, TX | 6,456 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| Wharton, NJ | 6,458 | 34 | 32.0% |
| Plattsmouth, NE | 6,453 | 40 | 20.0% |
| Ewa Villages, HI | 6,452 | 30 | 40.0% |
| North Riverside, IL | 6,460 | 55 | 10.0% |
| Sidney, NE | 6,451 | 19 | 62.0% |
| Keene, TX | 6,456 | 33 | 34.0% |
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