| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 42°F | 29°F | 0.6" |
| February | 21°F | 47°F | 32°F | 0.7" |
| March | 31°F | 60°F | 45°F | 1.4" |
| April | 41°F | 68°F | 54°F | 3.0" |
| May | 50°F | 77°F | 63°F | 4.8" |
| June | 62°F | 89°F | 75°F | 4.6" |
| July | 66°F | 93°F | 79°F | 4.2" |
| August | 63°F | 89°F | 76°F | 5.2" |
| September | 55°F | 83°F | 68°F | 3.4" |
| October | 43°F | 71°F | 56°F | 2.5" |
| November | 31°F | 58°F | 43°F | 0.9" |
| December | 19°F | 43°F | 30°F | 1.3" |
| Index | Belleville | Kansas | National |
| Air quality index | 32 | 47 | 50 |
| Pollution index | 728,569 | 850,204 | 5,066,862 |
| Measurement | Total |
| Days measured | 95 |
| Days with good air quality | 94 |
| Days with moderate air quality | 1 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Byron, NE | 84 | 19 | 62% |
| Chester, NE | 241 | 19 | 62% |
| Republic, KS | 96 | 19 | 62% |
| Hubbell, NE | 65 | 31 | 38% |
| Mahaska, KS | 58 | 31 | 38% |
| Belleville, KS | 1,831 | 32 | 36% |
| City, State | Population | Air Quality Index | National Avg. |
| Ball Ground, GA | 1,831 | 37 | 26% |
| Swartzville, PA | 1,831 | 42 | 16% |
| Montgomery, WV | 1,831 | 40 | 20% |
| Bay Park, NY | 1,831 | 51 | 2% |
| Elmwood Place, OH | 1,831 | 54 | 8% |
| Belleville, KS | 1,831 | 32 | 36% |
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