| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | -14°F | 1°F | -7°F | 8.3" |
| February | -15°F | 8°F | -4°F | 0.6" |
| March | -4°F | 20°F | 9°F | 1.3" |
| April | 24°F | 49°F | 39°F | 1.0" |
| May | 42°F | 65°F | 55°F | 2.7" |
| June | 51°F | 73°F | 63°F | 3.9" |
| July | 53°F | 74°F | 65°F | 2.6" |
| August | 48°F | 70°F | 59°F | 3.8" |
| September | 39°F | 57°F | 47°F | 2.4" |
| October | 17°F | 33°F | 25°F | 1.4" |
| November | -2°F | 12°F | 5°F | 0.5" |
| December | -7°F | 7°F | 0°F | 0.4" |
| Index | Salcha | Alaska | National |
| Air quality index | 38 | 30 | 42 |
| Pollution index | 4,370,560 | 11,243,194 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 230 |
| Days with moderate air quality | 96 |
| Days w/ poor A.Q. for sensitive groups | 18 |
| Days with unhealthy air quality | 16 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.090% |
| Mercury | 0.060% |
| City | Population | Air Quality Index | National Avg. |
| Moose Creek, AK | 574 | 38 | 24.0% |
| North Pole, AK | 2,969 | 38 | 24.0% |
| Eielson AFB, AK | 3,388 | 38 | 24.0% |
| Harding-Birch Lakes, AK | 293 | 38 | 24.0% |
| Salcha, AK | 930 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Cheyenne Wells, CO | 930 | 20 | 60.0% |
| Cedarville, NJ | 930 | 40 | 20.0% |
| Lake Roesiger, WA | 930 | 45 | 10.0% |
| La Farge, WI | 930 | 35 | 30.0% |
| Rib Lake, WI | 930 | 34 | 32.0% |
| Salcha, AK | 930 | 38 | 24.0% |
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