| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 15°F | 28°F | 21°F | 1.8" |
| February | 15°F | 30°F | 22°F | 1.1" |
| March | 26°F | 43°F | 34°F | 3.6" |
| April | 36°F | 56°F | 45°F | 7.5" |
| May | 47°F | 68°F | 56°F | 4.1" |
| June | 56°F | 77°F | 66°F | 4.1" |
| July | 60°F | 81°F | 70°F | 1.5" |
| August | 59°F | 78°F | 68°F | 4.1" |
| September | 51°F | 72°F | 61°F | 5.1" |
| October | 42°F | 59°F | 50°F | 5.8" |
| November | 31°F | 46°F | 38°F | 2.1" |
| December | 20°F | 32°F | 26°F | 4.5" |
| Index | Belgium | Wisconsin | National |
| Air quality index | 38 | 69 | 42 |
| Pollution index | 3,171,080 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 206 |
| Days with good air quality | 180 |
| Days with moderate air quality | 24 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.003% |
| Lead | 0.010% |
| Mercury | 0.100% |
| City | Population | Air Quality Index | National Avg. |
| Hingham, WI | 800 | 38 | 24.0% |
| Waubeka, WI | 624 | 38 | 24.0% |
| Random Lake, WI | 1,571 | 38 | 24.0% |
| Gibbsville, WI | 493 | 38 | 24.0% |
| Cedar Grove, WI | 2,231 | 38 | 24.0% |
| Belgium, WI | 2,201 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Point Clear, AL | 2,201 | 37 | 26.0% |
| Jackson, KY | 2,201 | 33 | 34.0% |
| Galesburg, MI | 2,201 | 38 | 24.0% |
| Colorado City, CO | 2,200 | 20 | 60.0% |
| Leadville North, CO | 2,200 | 47 | 6.0% |
| Belgium, WI | 2,201 | 38 | 24.0% |
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