Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 5°F | 23°F | 14°F | 0.4" |
February | 7°F | 27°F | 16°F | 0.6" |
March | 22°F | 41°F | 30°F | 1.1" |
April | 33°F | 57°F | 44°F | 1.9" |
May | 45°F | 69°F | 56°F | 3.0" |
June | 56°F | 78°F | 67°F | 3.7" |
July | 61°F | 84°F | 72°F | 2.6" |
August | 58°F | 81°F | 69°F | 3.6" |
September | 50°F | 74°F | 61°F | 2.8" |
October | 37°F | 58°F | 47°F | 2.3" |
November | 23°F | 43°F | 32°F | 0.4" |
December | 9°F | 26°F | 17°F | 0.7" |
Index | Henry | South Dakota | National |
Air quality index | 25 | 36 | 42 |
Pollution index | 146,247 | 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 | 0.002% |
Carbon Tetrachloride | 0.000% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Vienna, SD | 126 | 25 | 50.0% |
Florence, SD | 371 | 25 | 50.0% |
Wallace, SD | 69 | 25 | 50.0% |
Hazel, SD | 143 | 25 | 50.0% |
Garden City, SD | 93 | 25 | 50.0% |
Henry, SD | 295 | 25 | 50.0% |
City | Population | Air Quality Index | National Avg. |
Colony, AL | 295 | 53 | 6.0% |
Dyess, AR | 295 | 45 | 10.0% |
Viola, AR | 295 | 36 | 28.0% |
Canby, CA | 295 | 29 | 42.0% |
Grenada, CA | 295 | 36 | 28.0% |
Henry, SD | 295 | 25 | 50.0% |