Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 12°F | 29°F | 20°F | 0.8" |
February | 14°F | 32°F | 23°F | 1.0" |
March | 28°F | 48°F | 37°F | 2.1" |
April | 39°F | 63°F | 50°F | 4.6" |
May | 50°F | 73°F | 61°F | 3.9" |
June | 60°F | 81°F | 70°F | 7.0" |
July | 63°F | 84°F | 73°F | 4.8" |
August | 61°F | 82°F | 71°F | 4.7" |
September | 53°F | 76°F | 64°F | 4.0" |
October | 42°F | 63°F | 52°F | 3.1" |
November | 29°F | 49°F | 38°F | 2.1" |
December | 17°F | 33°F | 25°F | 1.9" |
Index | Walford | Iowa | National |
Air quality index | 39 | 39 | 50 |
Pollution index | 5,075,380 | 1,643,836 | 5,066,862 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 287 |
Days with moderate air quality | 78 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.070% |
Benzene | 0.050% |
Carbon Tetrachloride | 2.000% |
Lead | 0.040% |
Mercury | 0.100% |
City, State | Population | Air Quality Index | National Avg. |
Tiffin, IA | 2,530 | 35 | 30% |
North Liberty, IA | 16,984 | 35 | 30% |
Oxford, IA | 874 | 35 | 30% |
Williamsburg, IA | 3,144 | 35 | 30% |
Coralville, IA | 20,078 | 35 | 30% |
Walford, IA | 1,428 | 39 | 22% |
City, State | Population | Air Quality Index | National Avg. |
Plum Creek, VA | 1,428 | 41 | 18% |
Wolfe City, TX | 1,428 | 325 | 550% |
North Collins, NY | 1,428 | 39 | 22% |
Nashotah, WI | 1,428 | 37 | 26% |
Parker City, IN | 1,429 | 35 | 30% |
Walford, IA | 1,428 | 39 | 22% |