Alpine, CA
Full City Profile · California · San Diego County County
3.6
/5.0
B+
Good
15,470
Population
577/sq mi density
$111,723
Median Income
$48,125 per capita
$810,000
Home Value
$959,877 Zillow
$2,025
Median Rent
33.7% income on rent
63°F
Avg Temperature
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$111,723 median income, 4.5% unemployment
C+
Affordability
2.6 / 5.0
$810,000 home value, $2,025/mo rent
B+
Education
3.6 / 5.0
32.5% bachelor's degree or higher
Alpine enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 53°F in January while summers reach 73°F in July. Annual precipitation totals 16.1 inches. The area receives 0.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 71.
Temperature
53°F Jan (12°C)
73°F Jul (23°C)
| Annual Average | 62.6°F |
| 16% above US avg | |
| January Average | 53°F (12°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 2,111 ft (643 m) |
| Area | 26.8 sq mi (69.4 km²) |
| Population Density | 577/sq mi |
| Coordinates | 32.8425°N, 116.7559°W |
| Timezone | America/Los_Angeles |
| County | San Diego County County |
| Nearest Airport | San Diego International (SAN) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 71.0 |
| Rating | Moderate |
| Good Days % | 12.8% |
| Unhealthy Days | 52 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0453 ppm |
| NO₂ (Nitrogen Dioxide) | 13.7 ppb |
| SO₂ (Sulfur Dioxide) | 0.07 ppb |
| CO (Carbon Monoxide) | 0.50 ppm |
| PM2.5 (Fine Particles) | 8.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 99.7 / 100 |
| Social Vulnerability | 24.8 / 100 |
| Community Resilience | 8.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively High |
| Wildfire | Very High |
| Flood | Very High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Very Low |
| Landslide | Relatively High |
| Coastal Flood | Relatively Moderate |
| Tsunami | Relatively Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 1.2 m (4 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1862 | S. CALIFORNIA | Eruption + Earthquake | 1.2 m | - | 44 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Salton Buttes (113 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Salton Buttes | Lava dome(s) | -40 m (-131 ft) | 210 | 113 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (12°C) | 3.2 in | |
| February | 53°F (12°C) | 3.7 in | Wettest |
| March | 56°F (13°C) | 2.7 in | |
| April | 59°F (15°C) | 1.2 in | |
| May | 63°F (17°C) | 0.6 in | |
| June | 68°F (20°C) | 0.1 in | |
| July | 73°F (23°C) | 0.1 in | Driest |
| August | 76°F (24°C) | 0.1 in | Warmest |
| September | 73°F (23°C) | 0.3 in | |
| October | 66°F (19°C) | 0.6 in | |
| November | 59°F (15°C) | 1.5 in | |
| December | 52°F (11°C) | 2.0 in | Coldest |
Alpine has a seasonal temperature swing of 23°F / from 52°F in December to 76°F in August. Total annual precipitation is 16.1 inches, with February being the wettest month (3.7") and July the driest (0.1").