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| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 36°F | 27°F | 1.7" |
| February | 19°F | 38°F | 28°F | 1.8" |
| March | 33°F | 54°F | 42°F | 2.3" |
| April | 42°F | 67°F | 54°F | 4.2" |
| May | 53°F | 77°F | 64°F | 4.2" |
| June | 63°F | 85°F | 73°F | 5.0" |
| July | 64°F | 85°F | 74°F | 4.5" |
| August | 62°F | 84°F | 73°F | 2.4" |
| September | 56°F | 80°F | 67°F | 3.4" |
| October | 44°F | 67°F | 55°F | 3.7" |
| November | 33°F | 53°F | 42°F | 2.8" |
| December | 24°F | 39°F | 31°F | 2.7" |
| Index | Savoy | Illinois | National |
| Air quality index | 42 | 41 | 42 |
| Pollution index | 1,494,160 | 3,148,694 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 281 |
| Days with moderate air quality | 84 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.290% |
| Lead | 0.010% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Thomasboro, IL | 1,036 | 42 | 16.0% |
| Broadlands, IL | 340 | 42 | 16.0% |
| Champaign, IL | 88,288 | 42 | 16.0% |
| White Heath, IL | 153 | 42 | 16.0% |
| Lake of the Woods, IL | 2,515 | 42 | 16.0% |
| Savoy, IL | 8,802 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Southside, AL | 8,801 | 43 | 14.0% |
| Quakertown, PA | 8,807 | 42 | 16.0% |
| Live Oak, CA | 8,794 | 35 | 30.0% |
| Garrison, MD | 8,794 | 46 | 8.0% |
| Roanoke, TX | 8,810 | 51 | 2.0% |
| Savoy, IL | 8,802 | 42 | 16.0% |
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