Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 6°F | 28°F | 17°F | 0.5" |
February | 9°F | 34°F | 20°F | 0.7" |
March | 22°F | 48°F | 34°F | 1.0" |
April | 33°F | 62°F | 47°F | 2.2" |
May | 44°F | 73°F | 58°F | 3.2" |
June | 55°F | 83°F | 69°F | 4.5" |
July | 61°F | 89°F | 75°F | 2.7" |
August | 58°F | 85°F | 71°F | 3.3" |
September | 49°F | 79°F | 63°F | 2.8" |
October | 36°F | 64°F | 49°F | 2.2" |
November | 22°F | 49°F | 34°F | 0.8" |
December | 9°F | 31°F | 19°F | 1.3" |
Index | St. Lawrence | South Dakota | National |
Air quality index | 20 | 36 | 42 |
Pollution index | 138,400 | 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 | 0.004% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Wessington, SD | 241 | 20 | 60.0% |
Ree Heights, SD | 60 | 20 | 60.0% |
Miller, SD | 1,366 | 20 | 60.0% |
St. Lawrence, SD | 167 | 20 | 60.0% |
City | Population | Air Quality Index | National Avg. |
Hartly, DE | 167 | 42 | 16.0% |
Lidderdale, IA | 167 | 37 | 26.0% |
Sims, IL | 167 | 43 | 14.0% |
Salvisa, KY | 167 | 42 | 16.0% |
Burkittsville, MD | 167 | 40 | 20.0% |
St. Lawrence, SD | 167 | 20 | 60.0% |