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Pontoosuc, IL
Full City Profile · Illinois · Lee County County
3.1
/5.0
B
Good
104
Population
74/sq mi density
$54,375
Median Income
$29,063 per capita
$63,300
Home Value
$99,520 Zillow
52°F
Avg Temperature
275 sunny days/yr
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$54,375 median income, 5.7% unemployment
A+
Affordability
5.0 / 5.0
$63,300 home value, /mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
F
Education
1.4 / 5.0
5.2% bachelor's degree or higher
Pontoosuc experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 25°F in January while summers reach 76°F in July. The area gets 275 sunny days per year. Annual precipitation totals 39.4 inches. The area receives 18.1 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
25°F Jan (-4°C)
76°F Jul (25°C)
| Annual Average | 52.3°F |
| 3% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 528 ft (161 m) |
| Area | 0.8 sq mi (2.1 km²) |
| Population Density | 74/sq mi |
| Coordinates | 40.6286°N, 91.2107°W |
| Timezone | America/Chicago |
| County | Lee County County |
| Nearest Airport | Southeast Iowa Regional (BRL) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| PM2.5 (Fine Particles) | 9.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 63.0 / 100 |
| Social Vulnerability | 43.3 / 100 |
| Community Resilience | 84.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 1.5 in | Coldest |
| February | 28°F (-2°C) | 1.3 in | Driest |
| March | 40°F (4°C) | 2.8 in | |
| April | 52°F (11°C) | 3.7 in | |
| May | 63°F (17°C) | 4.2 in | |
| June | 72°F (22°C) | 4.0 in | |
| July | 76°F (25°C) | 4.3 in | Warmest |
| August | 74°F (23°C) | 3.6 in | |
| September | 66°F (19°C) | 4.3 in | Wettest |
| October | 54°F (12°C) | 2.9 in | |
| November | 40°F (5°C) | 2.5 in | |
| December | 28°F (-2°C) | 1.9 in |
Pontoosuc has a seasonal temperature swing of 52°F / from 25°F in January to 76°F in July. Total annual precipitation is 37.0 inches, with September being the wettest month (4.3") and February the driest (1.3").