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Arden, DE
Full City Profile · Delaware · Delaware County County
3.1
/5.0
B
Good
600
Population
2,400/sq mi density
$80,417
Median Income
$53,837 per capita
$484,200
Home Value
$354,184 Zillow
$1,250
Median Rent
22.5% income on rent
57°F
Avg Temperature
293 sunny days/yr
1,637
Violent Crime/100K
5,250 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$80,417 median income, 3.6% unemployment
B
Affordability
3.3 / 5.0
$484,200 home value, $1,250/mo rent
F
Safety
1.0 / 5.0
1,637 violent crimes/100K (331% above avg)
B+
Education
3.7 / 5.0
33.3% bachelor's degree or higher
Arden enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 35°F in January while summers reach 80°F in July. The area gets 293 sunny days per year. Annual precipitation totals 41.7 inches. Air quality is rated Good with a median AQI of 41.
Temperature
35°F Jan (2°C)
80°F Jul (26°C)
| Annual Average | 57.1°F |
| 6% above US avg | |
| January Average | 35°F (2°C) |
| July Average | 80°F (26°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 279 ft (85 m) |
| Area | 0.3 sq mi (0.7 km²) |
| Population Density | 2,400/sq mi |
| Coordinates | 39.8113°N, 75.4885°W |
| Timezone | America/New_York |
| County | Delaware County County |
| Nearest Airport | Philadelphia International (PHL) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0484 ppm |
| NO₂ (Nitrogen Dioxide) | 15.0 ppb |
| PM2.5 (Fine Particles) | 10.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 92.9 / 100 |
| Social Vulnerability | 33.0 / 100 |
| Community Resilience | 84.3 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
2 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 108 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | — | — | 25 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (2°C) | 3.6 in | |
| February | 34°F (1°C) | 2.9 in | Coldest, Driest |
| March | 42°F (6°C) | 4.0 in | |
| April | 52°F (11°C) | 3.8 in | |
| May | 62°F (17°C) | 4.2 in | |
| June | 71°F (22°C) | 3.7 in | |
| July | 80°F (26°C) | 4.5 in | Warmest, Wettest |
| August | 75°F (24°C) | 4.0 in | |
| September | 68°F (20°C) | 4.1 in | |
| October | 57°F (14°C) | 3.2 in | |
| November | 47°F (8°C) | 3.5 in | |
| December | 37°F (3°C) | 3.6 in |
Arden has a seasonal temperature swing of 45°F / from 34°F in February to 80°F in July. Total annual precipitation is 45.2 inches, with July being the wettest month (4.5") and February the driest (2.9").