| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 12°F | 27°F | 19°F | 0.4" |
| February | 13°F | 30°F | 21°F | 0.5" |
| March | 28°F | 45°F | 35°F | 1.5" |
| April | 39°F | 59°F | 48°F | 3.6" |
| May | 49°F | 71°F | 59°F | 3.7" |
| June | 60°F | 80°F | 69°F | 4.4" |
| July | 64°F | 84°F | 73°F | 3.6" |
| August | 62°F | 81°F | 70°F | 3.4" |
| September | 54°F | 74°F | 63°F | 2.4" |
| October | 42°F | 60°F | 50°F | 2.5" |
| November | 31°F | 46°F | 38°F | 0.9" |
| December | 18°F | 31°F | 24°F | 1.3" |
| Index | Kellogg | Minnesota | National |
| Air quality index | 15 | 35 | 42 |
| Pollution index | 830,810 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 57 |
| Days with good air quality | 53 |
| Days with moderate air quality | 4 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.020% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Buffalo City, WI | 822 | 15 | 70.0% |
| Minnesota City, MN | 155 | 15 | 70.0% |
| Nelson, WI | 311 | 15 | 70.0% |
| Rollingstone, MN | 651 | 15 | 70.0% |
| Wabasha, MN | 2,655 | 15 | 70.0% |
| Kellogg, MN | 432 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Oak Grove, AR | 432 | 18 | 64.0% |
| Pioneer, LA | 432 | 34 | 32.0% |
| Freeville, NY | 432 | 34 | 32.0% |
| Phillipsburg, OH | 432 | 47 | 6.0% |
| Drummond, OK | 432 | 40 | 20.0% |
| Kellogg, MN | 432 | 15 | 70.0% |
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