Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 11°F | 39°F | 24°F | 0.4" |
February | 13°F | 42°F | 26°F | 0.9" |
March | 24°F | 56°F | 38°F | 1.3" |
April | 33°F | 64°F | 47°F | 2.6" |
May | 43°F | 74°F | 58°F | 3.9" |
June | 54°F | 85°F | 69°F | 4.4" |
July | 60°F | 93°F | 76°F | 2.7" |
August | 58°F | 89°F | 73°F | 2.7" |
September | 48°F | 82°F | 64°F | 1.8" |
October | 35°F | 67°F | 49°F | 1.6" |
November | 22°F | 55°F | 36°F | 0.4" |
December | 11°F | 38°F | 23°F | 0.6" |
Index | Antelope | South Dakota | National |
Air quality index | 44 | 36 | 42 |
Pollution index | 167,591 | 345,623 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 274 |
Days with moderate air quality | 87 |
Days w/ poor A.Q. for sensitive groups | 4 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.003% |
Carbon Tetrachloride | 0.001% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Okreek, SD | 221 | 44 | 12.0% |
Two Strike, SD | 315 | 44 | 12.0% |
Rosebud, SD | 2,073 | 44 | 12.0% |
White Horse, SD | 211 | 44 | 12.0% |
St. Francis, SD | 533 | 44 | 12.0% |
Antelope, SD | 780 | 44 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Eads, CO | 780 | 20 | 60.0% |
Summersville, KY | 780 | 39 | 22.0% |
Hebron, ND | 780 | 33 | 34.0% |
Happy Valley, NM | 780 | 47 | 6.0% |
Ventura, NM | 780 | 12 | 76.0% |
Antelope, SD | 780 | 44 | 12.0% |