| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 8°F | 25°F | 16°F | 0.8" |
| February | 10°F | 28°F | 19°F | 0.8" |
| March | 23°F | 43°F | 32°F | 1.7" |
| April | 36°F | 59°F | 46°F | 3.4" |
| May | 46°F | 71°F | 58°F | 3.9" |
| June | 57°F | 80°F | 68°F | 5.6" |
| July | 61°F | 84°F | 72°F | 4.0" |
| August | 59°F | 81°F | 69°F | 4.5" |
| September | 51°F | 74°F | 62°F | 3.9" |
| October | 39°F | 60°F | 49°F | 2.8" |
| November | 27°F | 45°F | 35°F | 1.3" |
| December | 13°F | 28°F | 20°F | 1.5" |
| Index | Altoona | 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. |
| Fall Creek, WI | 1,610 | 34 | 32.0% |
| Elk Mound, WI | 1,129 | 34 | 32.0% |
| Cadott, WI | 1,358 | 34 | 32.0% |
| Lake Hallie, WI | 6,710 | 34 | 32.0% |
| Chippewa Falls, WI | 14,197 | 34 | 32.0% |
| Altoona, WI | 7,769 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Mechanicstown, NY | 7,770 | 36 | 28.0% |
| Los Fresnos, TX | 7,767 | 44 | 12.0% |
| Ilion, NY | 7,766 | 27 | 46.0% |
| Firebaugh, CA | 7,772 | 50 | = 100 |
| Wahpeton, ND | 7,772 | 33 | 34.0% |
| Altoona, WI | 7,769 | 34 | 32.0% |
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