Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 15°F | 36°F | 24°F | 1.5" |
February | 15°F | 35°F | 24°F | 2.3" |
March | 30°F | 51°F | 39°F | 3.5" |
April | 41°F | 65°F | 52°F | 8.7" |
May | 52°F | 74°F | 62°F | 7.1" |
June | 62°F | 83°F | 72°F | 5.9" |
July | 66°F | 87°F | 76°F | 7.3" |
August | 63°F | 84°F | 72°F | 7.4" |
September | 54°F | 77°F | 64°F | 10.8" |
October | 43°F | 66°F | 53°F | 4.9" |
November | 30°F | 50°F | 39°F | 4.4" |
December | 22°F | 39°F | 30°F | 4.0" |
Index | Promise City | Iowa | National |
Air quality index | 39 | 39 | 42 |
Pollution index | 1,228,210 | 1,154,535 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 306 |
Days with moderate air quality | 59 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.001% |
Lead | 0.001% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Corydon, IA | 1,659 | 39 | 22.0% |
Millerton, IA | 125 | 39 | 22.0% |
Allerton, IA | 453 | 39 | 22.0% |
Numa, IA | 79 | 39 | 22.0% |
Mystic, IA | 317 | 39 | 22.0% |
Promise City, IA | 72 | 39 | 22.0% |
City | Population | Air Quality Index | National Avg. |
New Blaine, AR | 72 | 36 | 28.0% |
Seba Dalkai, AZ | 72 | 45 | 10.0% |
Mabie, CA | 72 | 44 | 12.0% |
Smeltertown, CO | 72 | 16 | 68.0% |
Ranger, GA | 72 | 43 | 14.0% |
Promise City, IA | 72 | 39 | 22.0% |