Plum, PA
Full City Profile · Pennsylvania · Allegheny County County
4.8
/5.0
A+
Excellent
26,873
Population
941/sq mi density
$98,475
Median Income
$45,954 per capita
$218,600
Home Value
$235,496 Zillow
$1,156
Median Rent
24.1% income on rent
51°F
Avg Temperature
A+
Overall
4.8 / 5.0
Strong
A+
Economy
4.8 / 5.0
$98,475 median income, 2.9% unemployment
A+
Affordability
5.0 / 5.0
$218,600 home value, $1,156/mo rent
A
Education
4.5 / 5.0
43.3% bachelor's degree or higher
Plum experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 28°F in January while summers reach 73°F in July. Annual precipitation totals 44.5 inches. The area receives 25.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 52.
Temperature
28°F Jan (-2°C)
73°F Jul (23°C)
| Annual Average | 50.9°F |
| 6% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 1,127 ft (344 m) |
| Area | 28.6 sq mi (74.0 km²) |
| Population Density | 941/sq mi |
| Coordinates | 40.5019°N, 79.7482°W |
| Timezone | America/New_York |
| County | Allegheny County County |
| Nearest Airport | Pittsburgh/Butler Regional (BTP) 22 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 | 28°F (-2°C) | 3.4 in | Coldest |
| February | 30°F (-1°C) | 2.9 in | Driest |
| March | 38°F (3°C) | 3.7 in | |
| April | 50°F (10°C) | 3.7 in | |
| May | 60°F (16°C) | 3.9 in | |
| June | 68°F (20°C) | 4.5 in | |
| July | 73°F (23°C) | 4.5 in | Warmest, Wettest |
| August | 71°F (22°C) | 3.6 in | |
| September | 65°F (18°C) | 4.2 in | |
| October | 53°F (12°C) | 3.3 in | |
| November | 42°F (5°C) | 3.3 in | |
| December | 34°F (1°C) | 3.7 in |
Plum has a seasonal temperature swing of 45°F / from 28°F in January to 73°F in July. Total annual precipitation is 44.5 inches, with July being the wettest month (4.5") and February the driest (2.9").