| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 9°F | 25°F | 17°F | 2.1" |
| February | 11°F | 29°F | 19°F | 3.4" |
| March | 25°F | 43°F | 33°F | 3.4" |
| April | 37°F | 58°F | 46°F | 3.7" |
| May | 47°F | 70°F | 58°F | 7.3" |
| June | 57°F | 79°F | 68°F | 8.3" |
| July | 62°F | 84°F | 72°F | 7.2" |
| August | 60°F | 81°F | 70°F | 8.3" |
| September | 51°F | 73°F | 61°F | 7.3" |
| October | 40°F | 59°F | 48°F | 6.7" |
| November | 28°F | 45°F | 36°F | 3.9" |
| December | 15°F | 29°F | 21°F | 2.9" |
| Index | Colfax | Wisconsin | National |
| Air quality index | 34 | 69 | 42 |
| Pollution index | 2,879,330 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 305 |
| Days with moderate air quality | 58 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.002% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Altoona, WI | 7,769 | 34 | 32.0% |
| New Auburn, WI | 508 | 34 | 32.0% |
| Ridgeland, WI | 283 | 34 | 32.0% |
| Bloomer, WI | 3,495 | 34 | 32.0% |
| Elk Mound, WI | 1,129 | 34 | 32.0% |
| Colfax, WI | 1,181 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Woodsboro, MD | 1,181 | 42 | 16.0% |
| Swede Heaven, WA | 1,181 | 24 | 52.0% |
| Saint-André, NB | 1,181 | n/a | |
| Lorrainville, QC | 1,181 | n/a | |
| Delta Junction, AK | 1,182 | 38 | 24.0% |
| Colfax, WI | 1,181 | 34 | 32.0% |
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