| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 39°F | 27°F | 0.6" |
| February | 20°F | 43°F | 30°F | 0.9" |
| March | 33°F | 58°F | 44°F | 2.0" |
| April | 43°F | 68°F | 54°F | 4.3" |
| May | 53°F | 77°F | 64°F | 4.6" |
| June | 64°F | 86°F | 75°F | 6.0" |
| July | 67°F | 89°F | 78°F | 4.0" |
| August | 64°F | 87°F | 75°F | 4.7" |
| September | 56°F | 81°F | 67°F | 3.5" |
| October | 44°F | 69°F | 55°F | 3.1" |
| November | 32°F | 56°F | 43°F | 1.5" |
| December | 21°F | 40°F | 30°F | 1.9" |
| Index | Horton | Kansas | National |
| Air quality index | 43 | 47 | 42 |
| Pollution index | 308,193 | 989,153 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 283 |
| Days with moderate air quality | 82 |
| 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 | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Wetmore, KS | 315 | 41 | 18.0% |
| Kickapoo Site 7, KS | 61 | 41 | 18.0% |
| Muscotah, KS | 159 | 41 | 18.0% |
| Whiting, KS | 238 | 41 | 18.0% |
| Holton, KS | 3,233 | 41 | 18.0% |
| Horton, KS | 1,829 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Marion, KS | 1,829 | 22 | 56.0% |
| Wade, MS | 1,829 | 32 | 36.0% |
| Mathews, LA | 1,830 | 41 | 18.0% |
| Gilbert, MN | 1,828 | 35 | 30.0% |
| Lewiston, MN | 1,828 | 15 | 70.0% |
| Horton, KS | 1,829 | 43 | 14.0% |
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