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West Mifflin, PA
Full City Profile · Pennsylvania · Allegheny County County
3.2
/5.0
B
Good
19,338
Population
1,360/sq mi density
$70,335
Median Income
$36,493 per capita
$131,400
Home Value
$156,065 Zillow
$748
Median Rent
26.6% income on rent
52°F
Avg Temperature
275 sunny days/yr
158
Violent Crime/100K
2,130 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$70,335 median income, 5.4% unemployment
A+
Affordability
5.0 / 5.0
$131,400 home value, $748/mo rent
F
Safety
1.0 / 5.0
158 violent crimes/100K
C+
Education
2.9 / 5.0
24.2% bachelor's degree or higher
West Mifflin experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 30°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 41.3 inches. Air quality is rated Good with a median AQI of 40.
Temperature
30°F Jan (-1°C)
74°F Jul (23°C)
| Annual Average | 52.4°F |
| 3% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,193 ft (364 m) |
| Area | 14.5 sq mi (37.6 km²) |
| Population Density | 1,360/sq mi |
| Coordinates | 40.3577°N, 79.9054°W |
| Timezone | America/New_York |
| County | Allegheny County County |
| Nearest Airport | Pittsburgh International (PIT) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
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) | 2.5 in | Coldest |
| February | 32°F (-0°C) | 2.3 in | Driest |
| March | 40°F (5°C) | 3.3 in | |
| April | 51°F (10°C) | 3.3 in | |
| May | 61°F (16°C) | 4.0 in | Wettest |
| June | 70°F (21°C) | 3.9 in | |
| July | 74°F (23°C) | 3.9 in | Warmest |
| August | 72°F (22°C) | 3.6 in | |
| September | 65°F (19°C) | 3.2 in | |
| October | 54°F (12°C) | 2.6 in | |
| November | 43°F (6°C) | 3.0 in | |
| December | 34°F (1°C) | 2.9 in |
West Mifflin has a seasonal temperature swing of 44°F / from 30°F in January to 74°F in July. Total annual precipitation is 38.6 inches, with May being the wettest month (4.0") and February the driest (2.3").