Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 23°F | 51°F | 35°F | 7.7" |
February | 27°F | 45°F | 35°F | 4.7" |
March | 38°F | 65°F | 51°F | 2.9" |
April | 47°F | 71°F | 58°F | 7.0" |
May | 56°F | 86°F | 71°F | 1.6" |
June | 61°F | 90°F | 76°F | 1.1" |
July | 66°F | 87°F | 77°F | 3.1" |
August | 66°F | 86°F | 75°F | 6.0" |
September | 58°F | 79°F | 68°F | 3.3" |
October | 44°F | 73°F | 59°F | 0.7" |
November | 35°F | 64°F | 48°F | 2.8" |
December | 26°F | 53°F | 38°F | 1.7" |
Index | Harding-Birch Lakes | 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. |
Salcha, AK | 930 | 38 | 24.0% |
Harding-Birch Lakes, AK | 293 | 38 | 24.0% |
City | Population | Air Quality Index | National Avg. |
Lower Kalskag, AK | 293 | 31 | 38.0% |
Heath, AL | 293 | 35 | 30.0% |
Elfrida, AZ | 293 | 45 | 10.0% |
Clear Creek, CA | 293 | 46 | 8.0% |
Monterey Park Tract, CA | 293 | 49 | 2.0% |
Harding-Birch Lakes, AK | 293 | 38 | 24.0% |