| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 44°F | 28°F | 0.2" |
| February | 19°F | 46°F | 31°F | 0.4" |
| March | 28°F | 60°F | 42°F | 0.7" |
| April | 36°F | 66°F | 49°F | 2.8" |
| May | 46°F | 75°F | 59°F | 3.7" |
| June | 57°F | 88°F | 71°F | 3.4" |
| July | 62°F | 94°F | 77°F | 2.2" |
| August | 60°F | 90°F | 74°F | 2.4" |
| September | 51°F | 84°F | 65°F | 1.4" |
| October | 38°F | 69°F | 51°F | 1.4" |
| November | 26°F | 56°F | 39°F | 0.3" |
| December | 15°F | 42°F | 27°F | 0.4" |
| Index | Imperial | Nebraska | National |
| Air quality index | 19 | 86 | 42 |
| Pollution index | 35,318 | 590,627 | 2,726,193 |
| Measurement | Total |
| Days measured | 60 |
| Days with good air quality | 55 |
| Days with moderate air quality | 5 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.001% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Enders, NE | 6 | 19 | 62.0% |
| Wauneta, NE | 751 | 19 | 62.0% |
| Champion, NE | 42 | 19 | 62.0% |
| Imperial, NE | 2,163 | 19 | 62.0% |
| City | Population | Air Quality Index | National Avg. |
| Bar Harbor, ME | 2,163 | 31 | 38.0% |
| Mineralwells, WV | 2,163 | 35 | 30.0% |
| Humboldt, KS | 2,162 | 22 | 56.0% |
| Maple Lake, MN | 2,162 | 32 | 36.0% |
| Toftrees, PA | 2,162 | 44 | 12.0% |
| Imperial, NE | 2,163 | 19 | 62.0% |
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