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Brussels, IL
Full City Profile · Illinois · St. Charles County County
2.9
/5.0
C+
Fair
136
Population
243/sq mi density
$56,250
Median Income
$28,890 per capita
$126,300
Home Value
$192,256 Zillow
56°F
Avg Temperature
293 sunny days/yr
308
Violent Crime/100K
1,541 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.4 / 5.0
$56,250 median income, 2.2% unemployment
A+
Affordability
5.0 / 5.0
$126,300 home value, /mo rent
F
Safety
1.0 / 5.0
308 violent crimes/100K
C
Education
2.3 / 5.0
15.8% bachelor's degree or higher
Brussels enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 31°F in January while summers reach 78°F in July. The area gets 293 sunny days per year. Annual precipitation totals 45.7 inches. The area receives 9.0 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
31°F Jan (-1°C)
78°F Jul (26°C)
| Annual Average | 55.5°F |
| 3% above US avg | |
| January Average | 31°F (-1°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 517 ft (158 m) |
| Area | 0.2 sq mi (0.6 km²) |
| Population Density | 243/sq mi |
| Coordinates | 38.9485°N, 90.5890°W |
| Timezone | America/Chicago |
| County | St. Charles County County |
| Nearest Airport | St Louis Lambert International (STL) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0484 ppm |
| SO₂ (Sulfur Dioxide) | 1.02 ppb |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 92.6 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 95.1 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively High |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 1.8 in | Coldest, Driest |
| February | 33°F (1°C) | 2.0 in | |
| March | 44°F (7°C) | 3.4 in | |
| April | 55°F (13°C) | 3.8 in | |
| May | 64°F (18°C) | 4.1 in | Wettest |
| June | 73°F (23°C) | 3.5 in | |
| July | 78°F (26°C) | 3.9 in | Warmest |
| August | 76°F (24°C) | 3.2 in | |
| September | 68°F (20°C) | 3.3 in | |
| October | 57°F (14°C) | 2.8 in | |
| November | 44°F (7°C) | 3.2 in | |
| December | 33°F (1°C) | 2.8 in |
Brussels has a seasonal temperature swing of 48°F / from 31°F in January to 78°F in July. Total annual precipitation is 37.6 inches, with May being the wettest month (4.1") and January the driest (1.8").