| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 10°F | 25°F | 17°F | 1.7" |
| February | 12°F | 27°F | 19°F | 2.0" |
| March | 25°F | 44°F | 34°F | 3.8" |
| April | 38°F | 60°F | 48°F | 4.3" |
| May | 50°F | 70°F | 59°F | 4.7" |
| June | 61°F | 82°F | 72°F | 7.0" |
| July | 64°F | 86°F | 75°F | 4.5" |
| August | 60°F | 81°F | 71°F | 5.6" |
| September | 55°F | 76°F | 64°F | 12.2" |
| October | 43°F | 62°F | 52°F | 5.4" |
| November | 27°F | 44°F | 35°F | 2.0" |
| December | 11°F | 24°F | 18°F | 1.6" |
| Index | Osseo | Minnesota | National |
| Air quality index | 46 | 35 | 42 |
| Pollution index | 409,264 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 214 |
| Days with moderate air quality | 148 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Falcon Heights, MN | 5,586 | 46 | 8.0% |
| St. Paul, MN | 305,877 | 46 | 8.0% |
| Lauderdale, MN | 2,624 | 46 | 8.0% |
| St. Anthony city (Stearns County), MN | 106 | 46 | 8.0% |
| Maple Plain, MN | 1,737 | 46 | 8.0% |
| Osseo, MN | 2,738 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Arcadia, LA | 2,738 | 35 | 30.0% |
| Casselton, ND | 2,738 | 33 | 34.0% |
| West Hammond, NM | 2,738 | 49 | 2.0% |
| St. Henry, OH | 2,738 | 39 | 22.0% |
| Middlebush, NJ | 2,737 | 41 | 18.0% |
| Osseo, MN | 2,738 | 46 | 8.0% |
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