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Bel Air South, MD
Full City Profile · Maryland · Harford County County
3.9
/5.0
B+
Good
57,702
Population
2,713/sq mi density
$120,721
Median Income
$54,958 per capita
$384,000
Home Value
$371,348 Zillow
$1,666
Median Rent
28.0% income on rent
55°F
Avg Temperature
293 sunny days/yr
468
Violent Crime/100K
3,272 property/100K
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$120,721 median income, 2.3% unemployment
A+
Affordability
4.9 / 5.0
$384,000 home value, $1,666/mo rent
F
Safety
1.0 / 5.0
468 violent crimes/100K (23% above avg)
A+
Education
4.8 / 5.0
47.2% bachelor's degree or higher
Bel Air South experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 33°F in January while summers reach 78°F in July. The area gets 293 sunny days per year. Annual precipitation totals 48.3 inches. Air quality is rated Good with a median AQI of 41.
Temperature
33°F Jan (0°C)
78°F Jul (26°C)
| Annual Average | 55.4°F |
| 3% above US avg | |
| January Average | 33°F (0°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 220 ft (67 m) |
| Area | 15.7 sq mi (40.8 km²) |
| Population Density | 2,713/sq mi |
| Coordinates | 39.5081°N, 76.3094°W |
| Timezone | America/New_York |
| County | Harford County County |
| Nearest Airport | Baltimore/Washington International Thurgood Marshall (BWI) 30 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0479 ppm |
| PM2.5 (Fine Particles) | 7.2 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 72.5 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 91.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | — | — | 100 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (0°C) | 3.2 in | Coldest |
| February | 33°F (1°C) | 2.8 in | Driest |
| March | 42°F (5°C) | 3.5 in | |
| April | 52°F (11°C) | 3.7 in | |
| May | 62°F (16°C) | 4.3 in | Wettest |
| June | 70°F (21°C) | 4.2 in | |
| July | 78°F (26°C) | 4.3 in | Warmest |
| August | 74°F (23°C) | 4.2 in | |
| September | 67°F (19°C) | 3.9 in | |
| October | 56°F (13°C) | 3.2 in | |
| November | 46°F (8°C) | 3.7 in | |
| December | 37°F (3°C) | 3.7 in |
Bel Air South has a seasonal temperature swing of 46°F / from 33°F in January to 78°F in July. Total annual precipitation is 44.5 inches, with May being the wettest month (4.3") and February the driest (2.8").