Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 6°F | 25°F | 15°F | 0.6" |
February | 7°F | 26°F | 16°F | 1.3" |
March | 22°F | 41°F | 30°F | 1.2" |
April | 34°F | 57°F | 44°F | 2.5" |
May | 46°F | 71°F | 57°F | 2.5" |
June | 57°F | 80°F | 68°F | 4.1" |
July | 61°F | 85°F | 72°F | 2.6" |
August | 58°F | 81°F | 69°F | 3.2" |
September | 50°F | 75°F | 61°F | 2.7" |
October | 38°F | 60°F | 47°F | 2.7" |
November | 24°F | 45°F | 33°F | 0.5" |
December | 9°F | 27°F | 18°F | 1.0" |
Index | Corona | South Dakota | National |
Air quality index | 25 | 36 | 42 |
Pollution index | 358,608 | 345,623 | 2,726,193 |
Measurement | Total |
Days measured | 361 |
Days with good air quality | 325 |
Days with moderate air quality | 36 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.000% |
Lead | 0.002% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Summit, SD | 339 | 25 | 50.0% |
Milbank, SD | 3,137 | 25 | 50.0% |
Marvin, SD | 18 | 25 | 50.0% |
Twin Brooks, SD | 44 | 25 | 50.0% |
Peever, SD | 186 | 25 | 50.0% |
Corona, SD | 44 | 25 | 50.0% |
City | Population | Air Quality Index | National Avg. |
Ocotillo, CA | 44 | 58 | 16.0% |
Whitley Gardens, CA | 44 | 46 | 8.0% |
Crestone, CO | 44 | 16 | 68.0% |
Lynn, CO | 44 | 20 | 60.0% |
Fenwick, CT | 44 | 37 | 26.0% |
Corona, SD | 44 | 25 | 50.0% |