Altona, IL
Full City Profile · Illinois · Henry County County
3.5
/5.0
B+
Good
519
Population
552/sq mi density
$67,125
Median Income
$37,904 per capita
$89,200
Home Value
$132,685 Zillow
$944
Median Rent
18.1% income on rent
49°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.1 / 5.0
$67,125 median income, 19.6% unemployment
A+
Affordability
5.0 / 5.0
$89,200 home value, $944/mo rent
C+
Education
2.5 / 5.0
19.0% bachelor's degree or higher
Altona experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 21°F in January while summers reach 73°F in July. Annual precipitation totals 39.4 inches. The area receives 26.8 inches of snow annually.
Temperature
21°F Jan (-6°C)
73°F Jul (23°C)
| Annual Average | 49.0°F |
| 9% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 761 ft (232 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 552/sq mi |
| Coordinates | 41.1151°N, 90.1648°W |
| Timezone | America/Chicago |
| County | Henry County County |
| Nearest Airport | Quad Cities International (MLI) 29 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 57.1 / 100 |
| Social Vulnerability | 14.8 / 100 |
| Community Resilience | 83.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 21°F (-6°C) | 1.8 in | Coldest, Driest |
| February | 26°F (-4°C) | 2.1 in | |
| March | 37°F (3°C) | 2.6 in | |
| April | 49°F (10°C) | 4.0 in | |
| May | 61°F (16°C) | 5.2 in | Wettest |
| June | 70°F (21°C) | 4.7 in | |
| July | 73°F (23°C) | 4.0 in | Warmest |
| August | 71°F (21°C) | 3.8 in | |
| September | 64°F (18°C) | 3.8 in | |
| October | 52°F (11°C) | 2.8 in | |
| November | 38°F (4°C) | 2.6 in | |
| December | 27°F (-3°C) | 2.1 in |
Altona has a seasonal temperature swing of 51°F / from 21°F in January to 73°F in July. Total annual precipitation is 39.4 inches, with May being the wettest month (5.2") and January the driest (1.8").