All Countries
South Chicago Heights, IL
Full City Profile · Illinois · Lake County County
2.9
/5.0
C+
Fair
3,934
Population
2,490/sq mi density
$56,250
Median Income
$27,442 per capita
$136,000
Home Value
$155,981 Zillow
$1,105
Median Rent
46.2% income on rent
50°F
Avg Temperature
275 sunny days/yr
447
Violent Crime/100K
4,046 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.2 / 5.0
$56,250 median income, 4.1% unemployment
A+
Affordability
5.0 / 5.0
$136,000 home value, $1,105/mo rent
F
Safety
1.0 / 5.0
447 violent crimes/100K (18% above avg)
C
Education
2.2 / 5.0
15.5% bachelor's degree or higher
South Chicago Heights experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 23°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 42.1 inches. The area receives 28.2 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
23°F Jan (-5°C)
74°F Jul (23°C)
| Annual Average | 49.8°F |
| 8% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 699 ft (213 m) |
| Area | 1.6 sq mi (4.1 km²) |
| Population Density | 2,490/sq mi |
| Coordinates | 41.4834°N, 87.6372°W |
| Timezone | America/Chicago |
| County | Lake County County |
| Nearest Airport | Gary/Chicago International (GYY) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0452 ppm |
| NO₂ (Nitrogen Dioxide) | 13.8 ppb |
| SO₂ (Sulfur Dioxide) | 1.37 ppb |
| PM2.5 (Fine Particles) | 10.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.9 / 100 |
| Social Vulnerability | 48.7 / 100 |
| Community Resilience | 73.3 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Very High |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 67 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 23°F (-5°C) | 1.6 in | Coldest |
| February | 26°F (-3°C) | 1.5 in | Driest |
| March | 37°F (3°C) | 2.8 in | |
| April | 48°F (9°C) | 4.1 in | |
| May | 59°F (15°C) | 4.0 in | |
| June | 69°F (21°C) | 4.3 in | Wettest |
| July | 74°F (23°C) | 3.9 in | Warmest |
| August | 71°F (22°C) | 3.7 in | |
| September | 64°F (18°C) | 3.7 in | |
| October | 52°F (11°C) | 2.9 in | |
| November | 40°F (4°C) | 3.3 in | |
| December | 28°F (-2°C) | 2.6 in |
South Chicago Heights has a seasonal temperature swing of 51°F / from 23°F in January to 74°F in July. Total annual precipitation is 38.3 inches, with June being the wettest month (4.3") and February the driest (1.5").