| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 39°F | 25°F | 0.5" |
| February | 17°F | 43°F | 29°F | 0.9" |
| March | 28°F | 58°F | 41°F | 1.1" |
| April | 38°F | 67°F | 51°F | 3.0" |
| May | 48°F | 77°F | 62°F | 5.6" |
| June | 59°F | 87°F | 73°F | 5.5" |
| July | 64°F | 91°F | 77°F | 3.6" |
| August | 61°F | 87°F | 74°F | 3.6" |
| September | 52°F | 82°F | 66°F | 2.3" |
| October | 40°F | 69°F | 53°F | 2.9" |
| November | 27°F | 56°F | 40°F | 0.9" |
| December | 16°F | 40°F | 26°F | 1.3" |
| Index | Chapman | Nebraska | National |
| Air quality index | 19 | 86 | 42 |
| Pollution index | 574,580 | 590,627 | 2,726,193 |
| Measurement | Total |
| Days measured | 97 |
| Days with good air quality | 92 |
| Days with moderate air quality | 5 |
| 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 | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Hampton, NE | 440 | 19 | 62.0% |
| Hordville, NE | 205 | 19 | 62.0% |
| Central City, NE | 2,906 | 19 | 62.0% |
| Phillips, NE | 265 | 19 | 62.0% |
| Overland, NE | 102 | 19 | 62.0% |
| Chapman, NE | 275 | 19 | 62.0% |
| City | Population | Air Quality Index | National Avg. |
| Ambler, AK | 275 | 38 | 24.0% |
| Huslia, AK | 275 | 38 | 24.0% |
| Mount Olive CDP (Coosa County), AL | 275 | 53 | 6.0% |
| Oconee, GA | 275 | 38 | 24.0% |
| Kimballton, IA | 275 | 40 | 20.0% |
| Chapman, NE | 275 | 19 | 62.0% |
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