| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 12°F | 28°F | 20°F | 1.0" |
| February | 13°F | 29°F | 21°F | 0.7" |
| March | 25°F | 43°F | 33°F | 1.9" |
| April | 37°F | 57°F | 46°F | 3.6" |
| May | 48°F | 70°F | 58°F | 3.7" |
| June | 58°F | 78°F | 68°F | 5.2" |
| July | 62°F | 83°F | 72°F | 3.6" |
| August | 60°F | 80°F | 70°F | 3.5" |
| September | 52°F | 73°F | 62°F | 3.0" |
| October | 42°F | 60°F | 50°F | 2.9" |
| November | 30°F | 46°F | 38°F | 1.7" |
| December | 18°F | 32°F | 25°F | 1.5" |
| Index | Oshkosh | Wisconsin | National |
| Air quality index | 36 | 69 | 42 |
| Pollution index | 6,386,950 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 202 |
| Days with good air quality | 195 |
| Days with moderate air quality | 7 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.010% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Taycheedah, WI | 652 | 36 | 28.0% |
| Omro, WI | 3,584 | 36 | 28.0% |
| Ripon, WI | 7,802 | 36 | 28.0% |
| Waukau, WI | 235 | 36 | 28.0% |
| North Fond du Lac, WI | 5,076 | 36 | 28.0% |
| Oshkosh, WI | 66,753 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Kenner, LA | 66,759 | 45 | 10.0% |
| Conway, AR | 66,776 | 45 | 10.0% |
| West Des Moines, IA | 66,724 | 39 | 22.0% |
| Portland, ME | 66,706 | 40 | 20.0% |
| Redondo Beach, CA | 66,663 | 72 | 44.0% |
| Oshkosh, WI | 66,753 | 36 | 28.0% |
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