Mission Viejo, CA
Full City Profile · California · Orange County County
3.3
/5.0
B
Good
92,415
Population
5,233/sq mi density
$136,071
Median Income
$60,816 per capita
$946,300
Home Value
$1,206,543 Zillow
$2,713
Median Rent
34.8% income on rent
65°F
Avg Temperature
99
Violent Crime/100K
1,193 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$136,071 median income, 4.5% unemployment
C+
Affordability
2.7 / 5.0
$946,300 home value, $2,713/mo rent
F
Safety
1.0 / 5.0
99 violent crimes/100K
A+
Education
5.0 / 5.0
51.1% bachelor's degree or higher
Mission Viejo enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 58°F in January while summers reach 73°F in July. Annual precipitation totals 11.2 inches. The area receives 0.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 54.
Temperature
58°F Jan (14°C)
73°F Jul (23°C)
| Annual Average | 64.9°F |
| 20% above US avg | |
| January Average | 58°F (14°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 620 ft (189 m) |
| Area | 18.1 sq mi (46.9 km²) |
| Population Density | 5,233/sq mi |
| Coordinates | 33.6093°N, 117.6565°W |
| Timezone | America/Los_Angeles |
| County | Orange County County |
| Nearest Airport | John Wayne/Orange County (SNA) 13 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
4 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 | 102 km |
| 1862 | S. CALIFORNIA | Eruption + Earthquake | 1.2 m | - | 110 km |
| 1994 | WEST COAST, USA | Earthquake | 0.1 m | 57 | 105 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | - | - | 68 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Salton Buttes (195 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Salton Buttes | Lava dome(s) | -40 m (-131 ft) | 210 | 195 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 58°F (14°C) | 2.6 in | |
| February | 58°F (15°C) | 2.6 in | Wettest |
| March | 60°F (16°C) | 1.6 in | |
| April | 63°F (17°C) | 0.5 in | |
| May | 65°F (19°C) | 0.3 in | |
| June | 68°F (20°C) | 0.0 in | Driest |
| July | 73°F (23°C) | 0.0 in | |
| August | 74°F (23°C) | 0.0 in | Warmest |
| September | 73°F (23°C) | 0.1 in | |
| October | 68°F (20°C) | 0.5 in | |
| November | 63°F (17°C) | 0.8 in | |
| December | 57°F (14°C) | 2.0 in | Coldest |
Mission Viejo has a seasonal temperature swing of 16°F / from 57°F in December to 74°F in August. Total annual precipitation is 11.2 inches, with February being the wettest month (2.6") and June the driest (0.0").