Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 12°F | 29°F | 20°F | 0.4" |
February | 14°F | 30°F | 21°F | 1.8" |
March | 29°F | 46°F | 36°F | 1.2" |
April | 39°F | 62°F | 49°F | 3.6" |
May | 50°F | 73°F | 61°F | 3.9" |
June | 61°F | 83°F | 71°F | 2.1" |
July | 63°F | 85°F | 74°F | 4.0" |
August | 61°F | 82°F | 71°F | 1.6" |
September | 53°F | 76°F | 64°F | 2.2" |
October | 42°F | 63°F | 51°F | 3.0" |
November | 29°F | 48°F | 38°F | 2.8" |
December | 17°F | 32°F | 24°F | 0.7" |
Index | Dayton | Iowa | National |
Air quality index | 37 | 39 | 42 |
Pollution index | 517,691 | 1,154,535 | 2,726,193 |
Measurement | Total |
Days measured | 214 |
Days with good air quality | 210 |
Days with moderate air quality | 4 |
Days w/ poor A.Q. for sensitive groups | |
Days with unhealthy air quality |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.001% |
Lead | 0.002% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Duncombe, IA | 341 | 37 | 26.0% |
Dana, IA | 23 | 37 | 26.0% |
Stratford, IA | 669 | 37 | 26.0% |
Harcourt, IA | 251 | 37 | 26.0% |
Fraser, IA | 109 | 37 | 26.0% |
Dayton, IA | 839 | 37 | 26.0% |
City | Population | Air Quality Index | National Avg. |
Tulelake, CA | 839 | 29 | 42.0% |
Horseshoe Bend, ID | 839 | 36 | 28.0% |
Brownstown, IL | 839 | 40 | 20.0% |
Ventress, LA | 839 | 45 | 10.0% |
Middletown, MI | 839 | 38 | 24.0% |
Dayton, IA | 839 | 37 | 26.0% |