| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 1°F | 19°F | 10°F | 0.2" |
| February | 1°F | 19°F | 10°F | 0.6" |
| March | 17°F | 34°F | 25°F | 1.9" |
| April | 30°F | 51°F | 40°F | 2.8" |
| May | 43°F | 65°F | 53°F | 3.6" |
| June | 54°F | 75°F | 64°F | 5.6" |
| July | 60°F | 81°F | 70°F | 7.3" |
| August | 57°F | 79°F | 67°F | 6.1" |
| September | 49°F | 71°F | 59°F | 5.4" |
| October | 36°F | 54°F | 44°F | 3.7" |
| November | 21°F | 38°F | 29°F | 2.6" |
| December | 4°F | 20°F | 12°F | 0.4" |
| Index | Loma | North Dakota | National |
| Air quality index | 33 | 35 | 42 |
| Pollution index | 240,103 | 1,038,665 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 327 |
| Days with moderate air quality | 34 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.004% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Fairdale, ND | 27 | 33 | 34.0% |
| Alsen, ND | 21 | 33 | 34.0% |
| Langdon, ND | 1,936 | 33 | 34.0% |
| Hampden, ND | 21 | 33 | 34.0% |
| Munich, ND | 259 | 33 | 34.0% |
| Loma, ND | 14 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| Graniteville, CA | 14 | 44 | 12.0% |
| Lowman, ID | 14 | 36 | 28.0% |
| State Line, ID | 14 | 43 | 14.0% |
| Wenonah, IL | 14 | 40 | 20.0% |
| Mound, LA | 14 | 44 | 12.0% |
| Loma, ND | 14 | 33 | 34.0% |
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