| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 8°F | 26°F | 17°F | 0.6" |
| February | 11°F | 30°F | 19°F | 1.1" |
| March | 25°F | 44°F | 33°F | 3.2" |
| April | 35°F | 58°F | 46°F | 3.1" |
| May | 48°F | 71°F | 59°F | 5.0" |
| June | 58°F | 80°F | 69°F | 6.7" |
| July | 62°F | 86°F | 74°F | 5.7" |
| August | 60°F | 82°F | 70°F | 7.1" |
| September | 52°F | 77°F | 63°F | 6.5" |
| October | 40°F | 61°F | 50°F | 5.0" |
| November | 27°F | 47°F | 36°F | 3.1" |
| December | 13°F | 29°F | 21°F | 1.8" |
| Index | Canby | Minnesota | National |
| Air quality index | 32 | 35 | 42 |
| Pollution index | 1,069,770 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 362 |
| Days with good air quality | 327 |
| Days with moderate air quality | 35 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.020% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| Gary, SD | 284 | 25 | 50.0% |
| Porter, MN | 160 | 32 | 36.0% |
| Dawson, MN | 1,507 | 32 | 36.0% |
| St. Leo, MN | 161 | 32 | 36.0% |
| Taunton, MN | 158 | 32 | 36.0% |
| Canby, MN | 1,558 | 32 | 36.0% |
| City | Population | Air Quality Index | National Avg. |
| Greenland, AR | 1,558 | 44 | 12.0% |
| Guthrie Center, IA | 1,558 | 39 | 22.0% |
| Buxton, NC | 1,558 | 37 | 26.0% |
| Arlington, OH | 1,558 | 39 | 22.0% |
| Hubbard, TX | 1,558 | 41 | 18.0% |
| Canby, MN | 1,558 | 32 | 36.0% |
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