| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 58°F | 43°F | 0.4" |
| February | 34°F | 65°F | 48°F | 0.1" |
| March | 40°F | 72°F | 56°F | 0.1" |
| April | 47°F | 79°F | 63°F | 0.1" |
| May | 54°F | 86°F | 71°F | 0.3" |
| June | 66°F | 97°F | 82°F | 0.2" |
| July | 69°F | 94°F | 81°F | 1.9" |
| August | 67°F | 92°F | 79°F | 1.5" |
| September | 61°F | 87°F | 73°F | 1.4" |
| October | 50°F | 79°F | 64°F | 0.5" |
| November | 38°F | 67°F | 52°F | 0.3" |
| December | 32°F | 57°F | 43°F | 0.5" |
| Index | Salem | New Mexico | National |
| Air quality index | 51 | 37 | 42 |
| Pollution index | 3,438,690 | 2,051,791 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 170 |
| Days with moderate air quality | 171 |
| Days w/ poor A.Q. for sensitive groups | 17 |
| Days with unhealthy air quality | 3 |
| Pollutant | Total |
| Arsenic | 0.004% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.040% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| Golden Beach, FL | 586 | 41 | 18.0% |
| Dumont, IA | 586 | 15 | 70.0% |
| Packwood, IA | 586 | 35 | 30.0% |
| Bonfield, IL | 586 | 0 | 100.0% |
| White City, KS | 586 | 32 | 36.0% |
| Salem, NM | 586 | 51 | 2.0% |
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