Silvis, IL
Full City Profile · Illinois · Rock Island County County
3.0
/5.0
B
Good
7,939
Population
1,851/sq mi density
$67,569
Median Income
$39,512 per capita
$161,300
Home Value
$162,962 Zillow
$975
Median Rent
23.7% income on rent
51°F
Avg Temperature
242
Violent Crime/100K
3,636 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.6 / 5.0
$67,569 median income, 6.2% unemployment
A+
Affordability
5.0 / 5.0
$161,300 home value, $975/mo rent
F
Safety
1.0 / 5.0
242 violent crimes/100K
C
Education
2.3 / 5.0
16.8% bachelor's degree or higher
Silvis experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 23°F in January while summers reach 76°F in July. Annual precipitation totals 38.3 inches. The area receives 36.1 inches of snow annually. Air quality is rated Good with a median AQI of 44.
Temperature
23°F Jan (-5°C)
76°F Jul (24°C)
| Annual Average | 51.2°F |
| 5% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 76°F (24°C) |
Geography
| Elevation | 689 ft (210 m) |
| Area | 4.2 sq mi (10.8 km²) |
| Population Density | 1,851/sq mi |
| Coordinates | 41.4977°N, 90.4101°W |
| Timezone | America/Chicago |
| County | Rock Island County County |
| Nearest Airport | Quad Cities International (MLI) 6 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
| Good Days % | 75.7% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0483 ppm |
| PM2.5 (Fine Particles) | 9.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 84.1 / 100 |
| Social Vulnerability | 60.2 / 100 |
| Community Resilience | 87.3 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 23°F (-5°C) | 1.7 in | Coldest, Driest |
| February | 28°F (-2°C) | 1.8 in | |
| March | 40°F (4°C) | 2.6 in | |
| April | 51°F (11°C) | 3.8 in | |
| May | 63°F (17°C) | 4.7 in | |
| June | 72°F (22°C) | 5.0 in | Wettest |
| July | 76°F (24°C) | 4.2 in | Warmest |
| August | 73°F (23°C) | 4.0 in | |
| September | 66°F (19°C) | 3.3 in | |
| October | 54°F (12°C) | 2.8 in | |
| November | 40°F (5°C) | 2.3 in | |
| December | 29°F (-2°C) | 2.0 in |
Silvis has a seasonal temperature swing of 52°F / from 23°F in January to 76°F in July. Total annual precipitation is 38.3 inches, with June being the wettest month (5.0") and January the driest (1.7").