| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 56°F | 39°F | 6.1" |
| February | 31°F | 59°F | 43°F | 4.0" |
| March | 41°F | 70°F | 54°F | 7.4" |
| April | 49°F | 78°F | 62°F | 7.0" |
| May | 58°F | 85°F | 71°F | 8.5" |
| June | 69°F | 95°F | 81°F | 7.2" |
| July | 71°F | 97°F | 84°F | 8.4" |
| August | 70°F | 97°F | 83°F | 5.6" |
| September | 63°F | 89°F | 75°F | 7.4" |
| October | 51°F | 79°F | 63°F | 8.3" |
| November | 39°F | 66°F | 51°F | 7.3" |
| December | 29°F | 53°F | 40°F | 5.5" |
| Index | Altus | Oklahoma | National |
| Air quality index | 43 | 55 | 42 |
| Pollution index | 411,122 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 285 |
| Days with moderate air quality | 80 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Blair, OK | 660 | 43 | 14.0% |
| Headrick, OK | 70 | 43 | 14.0% |
| East Duke, OK | 389 | 43 | 14.0% |
| Olustee, OK | 722 | 43 | 14.0% |
| Elmer, OK | 92 | 43 | 14.0% |
| Altus, OK | 18,533 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Thomasville, GA | 18,530 | 40 | 20.0% |
| Rancho Mirage, CA | 18,537 | 89 | 78.0% |
| Milledgeville, GA | 18,526 | 38 | 24.0% |
| Lake Shore, MD | 18,523 | 46 | 8.0% |
| Merrifield, VA | 18,523 | 47 | 6.0% |
| Altus, OK | 18,533 | 43 | 14.0% |
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