Monongahela, PA
Full City Profile · Pennsylvania · Allegheny County County
2.9
/5.0
C+
Fair
4,113
Population
2,153/sq mi density
$55,500
Median Income
$33,624 per capita
$119,300
Home Value
$156,411 Zillow
$817
Median Rent
27.8% income on rent
53°F
Avg Temperature
330
Violent Crime/100K
269 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.1 / 5.0
$55,500 median income, 8.4% unemployment
A+
Affordability
5.0 / 5.0
$119,300 home value, $817/mo rent
F
Safety
1.0 / 5.0
330 violent crimes/100K
C+
Education
2.7 / 5.0
21.1% bachelor's degree or higher
Monongahela experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 30°F in January while summers reach 74°F in July. Annual precipitation totals 40.9 inches. The area receives 10.3 inches of snow annually. Air quality is rated Moderate with a median AQI of 52.
Temperature
30°F Jan (-1°C)
74°F Jul (24°C)
| Annual Average | 52.9°F |
| 2% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 74°F (24°C) |
Geography
| Elevation | 1,057 ft (322 m) |
| Area | 2.1 sq mi (5.5 km²) |
| Population Density | 2,153/sq mi |
| Coordinates | 40.1912°N, 79.9225°W |
| Timezone | America/New_York |
| County | Allegheny County County |
| Nearest Airport | Pittsburgh International (PIT) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 52.0 |
| Rating | Moderate |
| Good Days % | 47.8% |
| Unhealthy Days | 9 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0432 ppm |
| NO₂ (Nitrogen Dioxide) | 11.6 ppb |
| SO₂ (Sulfur Dioxide) | 2.41 ppb |
| CO (Carbon Monoxide) | 0.39 ppm |
| PM2.5 (Fine Particles) | 10.2 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 98.1 / 100 |
| Social Vulnerability | 32.7 / 100 |
| Community Resilience | 91.9 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Very High |
| Drought | No Rating |
| Cold Wave | Very High |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 3.2 in | Coldest |
| February | 32°F (0°C) | 2.8 in | Driest |
| March | 40°F (5°C) | 3.4 in | |
| April | 52°F (11°C) | 3.5 in | |
| May | 62°F (17°C) | 3.9 in | |
| June | 70°F (21°C) | 4.3 in | Wettest |
| July | 74°F (24°C) | 4.1 in | Warmest |
| August | 73°F (23°C) | 3.5 in | |
| September | 67°F (19°C) | 3.3 in | |
| October | 55°F (13°C) | 2.9 in | |
| November | 44°F (7°C) | 2.9 in | |
| December | 35°F (2°C) | 3.3 in |
Monongahela has a seasonal temperature swing of 44°F / from 30°F in January to 74°F in July. Total annual precipitation is 40.9 inches, with June being the wettest month (4.3") and February the driest (2.8").