| 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 | Plymouth | Minnesota | National |
| Air quality index | 46 | 35 | 42 |
| Pollution index | 166,775 | 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 | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Falcon Heights, MN | 5,586 | 46 | 8.0% |
| Coon Rapids, MN | 62,706 | 46 | 8.0% |
| Richfield, MN | 36,253 | 46 | 8.0% |
| Greenfield, MN | 3,013 | 46 | 8.0% |
| Medina, MN | 6,549 | 46 | 8.0% |
| Plymouth, MN | 78,879 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Flower Mound, TX | 78,854 | 51 | 2.0% |
| Drummondville, QC | 79,029 | n/a | |
| Pharr, TX | 78,689 | 42 | 16.0% |
| Parma, OH | 78,623 | 50 | = 100 |
| Airdrie, AB | 79,163 | n/a | |
| Plymouth, MN | 78,879 | 46 | 8.0% |
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