Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 7°F | 26°F | 15°F | 0.8" |
February | 10°F | 27°F | 17°F | 1.4" |
March | 24°F | 44°F | 32°F | 2.6" |
April | 35°F | 58°F | 45°F | 6.4" |
May | 49°F | 71°F | 58°F | 6.6" |
June | 60°F | 80°F | 69°F | 8.9" |
July | 62°F | 85°F | 73°F | 5.8" |
August | 58°F | 82°F | 68°F | 7.5" |
September | 53°F | 78°F | 63°F | 5.3" |
October | 40°F | 63°F | 50°F | 6.0" |
November | 26°F | 46°F | 34°F | 2.2" |
December | 11°F | 26°F | 18°F | 1.2" |
Index | Grenville | South Dakota | National |
Air quality index | 25 | 36 | 42 |
Pollution index | 267,939 | 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 | 0.000% |
Benzene | 0.004% |
Carbon Tetrachloride | 0.000% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Roslyn, SD | 221 | 25 | 50.0% |
Ortley, SD | 58 | 25 | 50.0% |
Webster, SD | 1,681 | 25 | 50.0% |
Eden, SD | 141 | 25 | 50.0% |
Agency Village, SD | 970 | 25 | 50.0% |
Grenville, SD | 71 | 25 | 50.0% |
City | Population | Air Quality Index | National Avg. |
Chitina, AK | 71 | 31 | 38.0% |
Twin Hills, AK | 71 | 31 | 38.0% |
Wikieup, AZ | 71 | 13 | 74.0% |
Kim, CO | 71 | 20 | 60.0% |
Westwood, IA | 71 | 29 | 42.0% |
Grenville, SD | 71 | 25 | 50.0% |