Camp Pendleton Mainside, CA
Full City Profile · California · Orange County County
2.6
/5.0
C+
Fair
9,801
Population
912/sq mi density
$56,250
Median Income
$23,953 per capita
$3,501
Median Rent
51.0% income on rent
62°F
Avg Temperature
C+
Overall
2.6 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.6 / 5.0
$56,250 median income, 3.6% unemployment
F
Affordability
1.0 / 5.0
B
Education
3.2 / 5.0
27.0% bachelor's degree or higher
Camp Pendleton Mainside enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 55°F in January while summers reach 70°F in July. Annual precipitation totals 11.9 inches. The area receives 0.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 54.
Temperature
55°F Jan (13°C)
70°F Jul (21°C)
| Annual Average | 62.2°F |
| 15% above US avg | |
| January Average | 55°F (13°C) |
| July Average | 70°F (21°C) |
Geography
| Elevation | 495 ft (151 m) |
| Area | 9.1 sq mi (23.5 km²) |
| Population Density | 912/sq mi |
| Coordinates | 33.3072°N, 117.3310°W |
| Timezone | America/Los_Angeles |
| County | Orange County County |
| Nearest Airport | John Wayne/Orange County (SNA) 40 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 54.0 |
| Rating | Moderate |
| Good Days % | 32.5% |
| Unhealthy Days | 16 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0440 ppm |
| NO₂ (Nitrogen Dioxide) | 18.4 ppb |
| CO (Carbon Monoxide) | 0.35 ppm |
| PM2.5 (Fine Particles) | 9.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 99.8 / 100 |
| Social Vulnerability | 24.9 / 100 |
| Community Resilience | 16.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | No Rating |
| Earthquake | Very High |
| Wildfire | Relatively High |
| Flood | Very High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | No Rating |
| Landslide | Relatively High |
| Coastal Flood | Relatively High |
| Tsunami | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 3.1 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1930 | S. CALIFORNIA | Eruption + Earthquake | 3.1 m | 1 | 146 km |
| 1862 | S. CALIFORNIA | Eruption + Earthquake | 1.2 m | - | 69 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | - | - | 113 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Salton Buttes (160 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Salton Buttes | Lava dome(s) | -40 m (-131 ft) | 210 | 160 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 55°F (13°C) | 2.4 in | |
| February | 55°F (13°C) | 2.9 in | Wettest |
| March | 57°F (14°C) | 1.7 in | |
| April | 60°F (15°C) | 0.9 in | |
| May | 63°F (17°C) | 0.3 in | |
| June | 67°F (19°C) | 0.1 in | |
| July | 70°F (21°C) | 0.1 in | |
| August | 72°F (22°C) | 0.0 in | Warmest, Driest |
| September | 70°F (21°C) | 0.1 in | |
| October | 66°F (19°C) | 0.6 in | |
| November | 59°F (15°C) | 0.8 in | |
| December | 54°F (12°C) | 2.0 in | Coldest |
Camp Pendleton Mainside has a seasonal temperature swing of 18°F / from 54°F in December to 72°F in August. Total annual precipitation is 11.9 inches, with February being the wettest month (2.9") and August the driest (0.0").