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Coal Valley, IL
Full City Profile · Illinois · Rock Island County County
3.7
/5.0
B+
Good
4,142
Population
1,307/sq mi density
$104,781
Median Income
$48,040 per capita
$208,700
Home Value
$261,909 Zillow
51°F
Avg Temperature
275 sunny days/yr
133
Violent Crime/100K
1,596 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$104,781 median income, 2.0% unemployment
A+
Affordability
5.0 / 5.0
$208,700 home value, /mo rent
F
Safety
1.0 / 5.0
133 violent crimes/100K
B+
Education
3.7 / 5.0
33.2% bachelor's degree or higher
Coal Valley experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 23°F in January while summers reach 75°F in July. The area gets 275 sunny days per year. Annual precipitation totals 39.1 inches. The area receives 28.4 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
23°F Jan (-5°C)
75°F Jul (24°C)
| Annual Average | 50.9°F |
| 6% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 689 ft (210 m) |
| Area | 1.1 sq mi (2.8 km²) |
| Population Density | 1,307/sq mi |
| Coordinates | 41.4384°N, 90.4394°W |
| Timezone | America/Chicago |
| County | Rock Island County County |
| Nearest Airport | Quad Cities International (MLI) 4 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
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) | 1.5 in | Coldest |
| February | 26°F (-3°C) | 1.2 in | Driest |
| March | 38°F (3°C) | 2.7 in | |
| April | 50°F (10°C) | 3.8 in | |
| May | 61°F (16°C) | 4.1 in | |
| June | 71°F (22°C) | 4.3 in | |
| July | 75°F (24°C) | 4.6 in | Warmest, Wettest |
| August | 73°F (23°C) | 4.1 in | |
| September | 64°F (18°C) | 3.8 in | |
| October | 53°F (12°C) | 2.8 in | |
| November | 39°F (4°C) | 2.5 in | |
| December | 26°F (-3°C) | 2.1 in |
Coal Valley has a seasonal temperature swing of 53°F / from 23°F in January to 75°F in July. Total annual precipitation is 37.5 inches, with July being the wettest month (4.6") and February the driest (1.2").