| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 48°F | 34°F | 0.6" |
| February | 26°F | 51°F | 37°F | 0.7" |
| March | 39°F | 63°F | 50°F | 1.9" |
| April | 48°F | 72°F | 59°F | 4.3" |
| May | 57°F | 78°F | 67°F | 5.6" |
| June | 67°F | 88°F | 77°F | 5.7" |
| July | 70°F | 92°F | 81°F | 4.3" |
| August | 68°F | 92°F | 79°F | 3.7" |
| September | 60°F | 84°F | 70°F | 3.5" |
| October | 48°F | 73°F | 59°F | 3.5" |
| November | 37°F | 61°F | 48°F | 1.9" |
| December | 27°F | 48°F | 36°F | 1.2" |
| Index | Altamont | Kansas | National |
| Air quality index | 38 | 47 | 42 |
| Pollution index | 947,958 | 989,153 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 289 |
| Days with moderate air quality | 73 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Oswego, KS | 1,683 | 38 | 24.0% |
| Cherryvale, KS | 2,172 | 38 | 24.0% |
| Bartlett, KS | 71 | 38 | 24.0% |
| Parsons, KS | 9,648 | 38 | 24.0% |
| Chetopa, KS | 1,158 | 38 | 24.0% |
| Altamont, KS | 1,055 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Mountain Village, AK | 1,055 | 31 | 38.0% |
| Madison, AR | 1,055 | 45 | 10.0% |
| Lawton, IA | 1,055 | 35 | 30.0% |
| Neola, IA | 1,055 | 40 | 20.0% |
| Seelyville, IN | 1,055 | 45 | 10.0% |
| Altamont, KS | 1,055 | 38 | 24.0% |
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