Simi Valley, CA
Full City Profile · California · Los Angeles County County
3.2
/5.0
B
Good
125,769
Population
3,027/sq mi density
$117,703
Median Income
$53,828 per capita
$753,500
Home Value
$833,307 Zillow
$2,513
Median Rent
37.6% income on rent
67°F
Avg Temperature
133
Violent Crime/100K
937 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$117,703 median income, 4.5% unemployment
B
Affordability
3.1 / 5.0
$753,500 home value, $2,513/mo rent
F
Safety
1.0 / 5.0
133 violent crimes/100K
B+
Education
4.0 / 5.0
37.4% bachelor's degree or higher
Simi Valley enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 57°F in January while summers reach 78°F in July. Annual precipitation totals 17.4 inches. The area receives 0.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 80.
Temperature
57°F Jan (14°C)
78°F Jul (25°C)
| Annual Average | 66.6°F |
| 23% above US avg | |
| January Average | 57°F (14°C) |
| July Average | 78°F (25°C) |
Geography
| Elevation | 883 ft (269 m) |
| Area | 41.6 sq mi (107.6 km²) |
| Population Density | 3,027/sq mi |
| Coordinates | 34.2669°N, 118.7485°W |
| Timezone | America/Los_Angeles |
| County | Los Angeles County County |
| Nearest Airport | Bob Hope (BUR) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 80.0 |
| Rating | Moderate |
| Good Days % | 10.4% |
| Unhealthy Days | 133 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0482 ppm |
| NO₂ (Nitrogen Dioxide) | 17.4 ppb |
| SO₂ (Sulfur Dioxide) | 0.32 ppb |
| CO (Carbon Monoxide) | 0.32 ppm |
| PM2.5 (Fine Particles) | 10.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 100.0 / 100 |
| Social Vulnerability | 55.4 / 100 |
| Community Resilience | 13.6 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | No Rating |
| Earthquake | Very High |
| Wildfire | Very High |
| Flood | Very High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Relatively Moderate |
| Lightning | Very High |
| Drought | Relatively Low |
| Cold Wave | Very Low |
| Landslide | Relatively High |
| Coastal Flood | Relatively High |
| Tsunami | Relatively Low |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 3.4 m (11 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1812 | S. CALIFORNIA | Eruption + Earthquake | 3.4 m | 1 | 106 km |
| 1930 | S. CALIFORNIA | Eruption + Earthquake | 3.1 m | 1 | 28 km |
| 1994 | WEST COAST, USA | Earthquake | 0.1 m | 57 | 20 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | - | - | 63 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 57°F (14°C) | 3.8 in | |
| February | 57°F (14°C) | 4.7 in | Wettest |
| March | 61°F (16°C) | 2.8 in | |
| April | 63°F (17°C) | 1.0 in | |
| May | 68°F (20°C) | 0.4 in | |
| June | 72°F (22°C) | 0.0 in | |
| July | 78°F (25°C) | 0.1 in | |
| August | 79°F (26°C) | 0.0 in | Warmest, Driest |
| September | 77°F (25°C) | 0.1 in | |
| October | 70°F (21°C) | 0.7 in | |
| November | 62°F (17°C) | 1.1 in | |
| December | 56°F (13°C) | 2.8 in | Coldest |
Simi Valley has a seasonal temperature swing of 23°F / from 56°F in December to 79°F in August. Total annual precipitation is 17.4 inches, with February being the wettest month (4.7") and August the driest (0.0").