Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 2°F | 26°F | 14°F | 0.6" |
February | 5°F | 30°F | 17°F | 0.7" |
March | 19°F | 45°F | 31°F | 0.9" |
April | 31°F | 61°F | 45°F | 2.3" |
May | 43°F | 72°F | 57°F | 3.5" |
June | 53°F | 82°F | 68°F | 3.6" |
July | 58°F | 88°F | 73°F | 3.7" |
August | 55°F | 84°F | 69°F | 2.5" |
September | 46°F | 78°F | 61°F | 2.1" |
October | 34°F | 63°F | 47°F | 2.0" |
November | 19°F | 47°F | 32°F | 0.6" |
December | 6°F | 28°F | 17°F | 1.0" |
Index | Ferney | South Dakota | National |
Air quality index | 20 | 36 | 42 |
Pollution index | 193,817 | 345,623 | 2,726,193 |
Measurement | Total |
Days measured | 122 |
Days with good air quality | 112 |
Days with moderate air quality | 10 |
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 | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Stratford, SD | 42 | 20 | 60.0% |
Pierpont, SD | 193 | 20 | 60.0% |
Bath, SD | 217 | 20 | 60.0% |
Andover, SD | 78 | 20 | 60.0% |
Verdon, SD | 3 | 20 | 60.0% |
Ferney, SD | 37 | 20 | 60.0% |
City | Population | Air Quality Index | National Avg. |
Clark's Point, AK | 37 | 31 | 38.0% |
Wahak Hotrontk, AZ | 37 | 47 | 6.0% |
Whitehawk, CA | 37 | 44 | 12.0% |
Stonewall Gap, CO | 37 | 15 | 70.0% |
Aldora, GA | 37 | 38 | 24.0% |
Ferney, SD | 37 | 20 | 60.0% |