| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 15°F | 35°F | 24°F | 2.0" |
| February | 18°F | 38°F | 27°F | 1.9" |
| March | 31°F | 54°F | 41°F | 3.3" |
| April | 41°F | 65°F | 52°F | 6.2" |
| May | 52°F | 75°F | 63°F | 8.6" |
| June | 63°F | 85°F | 73°F | 11.2" |
| July | 67°F | 88°F | 77°F | 5.0" |
| August | 64°F | 85°F | 74°F | 8.7" |
| September | 55°F | 79°F | 66°F | 7.2" |
| October | 43°F | 66°F | 53°F | 7.5" |
| November | 30°F | 53°F | 40°F | 3.3" |
| December | 18°F | 37°F | 27°F | 4.1" |
| Index | Valley | Nebraska | National |
| Air quality index | 40 | 86 | 42 |
| Pollution index | 95,979 | 590,627 | 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 | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Ithaca, NE | 138 | 31 | 38.0% |
| Wahoo, NE | 4,520 | 31 | 38.0% |
| Leshara, NE | 103 | 40 | 20.0% |
| Venice, NE | 45 | 40 | 20.0% |
| Arlington, NE | 1,657 | 40 | 20.0% |
| Valley, NE | 2,834 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Paramount-Long Meadow, MD | 2,834 | 40 | 20.0% |
| Ashland, NE | 2,834 | 31 | 38.0% |
| Montara, CA | 2,833 | 43 | 14.0% |
| Towanda, PA | 2,833 | 36 | 28.0% |
| Walworth, WI | 2,835 | 37 | 26.0% |
| Valley, NE | 2,834 | 40 | 20.0% |
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