| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 15°F | 31°F | 22°F | 1.2" |
| February | 21°F | 41°F | 29°F | 2.0" |
| March | 34°F | 59°F | 44°F | 7.6" |
| April | 42°F | 64°F | 51°F | 6.7" |
| May | 54°F | 75°F | 64°F | 10.5" |
| June | 63°F | 84°F | 73°F | 7.9" |
| July | 67°F | 91°F | 78°F | 7.4" |
| August | 66°F | 88°F | 76°F | 5.8" |
| September | 58°F | 82°F | 69°F | 4.3" |
| October | 45°F | 69°F | 56°F | 5.8" |
| November | 31°F | 57°F | 42°F | 3.9" |
| December | 17°F | 34°F | 25°F | 2.4" |
| Index | Trumbull | Nebraska | National |
| Air quality index | 19 | 86 | 42 |
| Pollution index | 106,281 | 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 | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Alda, NE | 597 | 19 | 62.0% |
| Harvard, NE | 1,184 | 19 | 62.0% |
| Roseland, NE | 219 | 19 | 62.0% |
| Aurora, NE | 4,523 | 19 | 62.0% |
| Clay Center, NE | 859 | 19 | 62.0% |
| Trumbull, NE | 264 | 19 | 62.0% |
| City | Population | Air Quality Index | National Avg. |
| Industry, CA | 264 | 72 | 44.0% |
| Crystal Lake, IA | 264 | 15 | 70.0% |
| Bliss, ID | 264 | 20 | 60.0% |
| Sweetwater, ID | 264 | 29 | 42.0% |
| Fenton, LA | 264 | 45 | 10.0% |
| Trumbull, NE | 264 | 19 | 62.0% |
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