| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 8°F | 24°F | 16°F | 0.9" |
| February | 10°F | 27°F | 18°F | 0.7" |
| March | 22°F | 41°F | 31°F | 1.7" |
| April | 34°F | 56°F | 45°F | 3.3" |
| May | 46°F | 69°F | 56°F | 3.8" |
| June | 56°F | 78°F | 66°F | 4.7" |
| July | 60°F | 82°F | 71°F | 4.3" |
| August | 58°F | 79°F | 68°F | 4.5" |
| September | 50°F | 72°F | 60°F | 3.8" |
| October | 39°F | 57°F | 47°F | 3.4" |
| November | 27°F | 43°F | 35°F | 1.5" |
| December | 14°F | 28°F | 20°F | 1.9" |
| Index | Wausau | Wisconsin | National |
| Air quality index | 34 | 69 | 42 |
| Pollution index | 4,968,600 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 205 |
| Days with good air quality | 196 |
| Days with moderate air quality | 9 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.030% |
| Mercury | 0.040% |
| City | Population | Air Quality Index | National Avg. |
| Kronenwetter, WI | 7,891 | 34 | 32.0% |
| Rib Mountain, WI | 5,963 | 34 | 32.0% |
| Maine, WI | 2,577 | 34 | 32.0% |
| Rothschild, WI | 5,286 | 34 | 32.0% |
| Marathon City, WI | 1,331 | 34 | 32.0% |
| Wausau, WI | 38,685 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Wheeling, IL | 38,684 | 55 | 10.0% |
| Mission Bend, TX | 38,693 | 52 | 4.0% |
| Hot Springs, AR | 38,697 | 38 | 24.0% |
| Clovis, NM | 38,701 | 25 | 50.0% |
| Pacifica, CA | 38,663 | 43 | 14.0% |
| Wausau, WI | 38,685 | 34 | 32.0% |
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