Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 3°F | 20°F | 11°F | 5.3" |
February | 4°F | 22°F | 12°F | 1.7" |
March | 21°F | 38°F | 28°F | 2.5" |
April | 34°F | 54°F | 43°F | 3.2" |
May | 46°F | 69°F | 56°F | 4.5" |
June | 56°F | 77°F | 66°F | 7.4" |
July | 60°F | 83°F | 71°F | 6.3" |
August | 57°F | 79°F | 67°F | 2.9" |
September | 49°F | 72°F | 60°F | 3.7" |
October | 38°F | 57°F | 46°F | 7.1" |
November | 24°F | 41°F | 32°F | 0.9" |
December | 7°F | 23°F | 15°F | 0.7" |
Index | White Rock | South Dakota | National |
Air quality index | 33 | 36 | 42 |
Pollution index | 1,462,220 | 345,623 | 2,726,193 |
Measurement | Total |
Days measured | 363 |
Days with good air quality | 327 |
Days with moderate air quality | 34 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.040% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.000% |
Lead | 0.040% |
Mercury | 0.080% |
City | Population | Air Quality Index | National Avg. |
Wheaton, MN | 1,401 | 25 | 50.0% |
Dumont, MN | 111 | 25 | 50.0% |
Nashua, MN | 64 | 33 | 34.0% |
Rosholt, SD | 498 | 33 | 34.0% |
Tintah, MN | 57 | 33 | 34.0% |
White Rock, SD | 10 | 33 | 34.0% |
City | Population | Air Quality Index | National Avg. |
Memphis, AL | 10 | 35 | 30.0% |
Indian Falls, CA | 10 | 46 | 8.0% |
Bolan, IA | 10 | 15 | 70.0% |
Hepburn, IA | 10 | 40 | 20.0% |
Jacksonville, IA | 10 | 40 | 20.0% |
White Rock, SD | 10 | 33 | 34.0% |