Acton, CA
Full City Profile · California · Los Angeles County County
3.8
/5.0
B+
Good
7,721
Population
197/sq mi density
$110,000
Median Income
$46,814 per capita
$695,300
Home Value
$844,998 Zillow
$1,755
Median Rent
36.7% income on rent
63°F
Avg Temperature
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$110,000 median income, 1.7% unemployment
B
Affordability
3.1 / 5.0
$695,300 home value, $1,755/mo rent
B
Education
3.3 / 5.0
29.3% bachelor's degree or higher
Acton enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 46°F in January while summers reach 83°F in July. Annual precipitation totals 10.9 inches. The area receives 0.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 80.
Temperature
46°F Jan (8°C)
83°F Jul (28°C)
| Annual Average | 62.6°F |
| 16% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 83°F (28°C) |
Geography
| Elevation | 3,106 ft (947 m) |
| Area | 39.3 sq mi (101.7 km²) |
| Population Density | 197/sq mi |
| Coordinates | 34.4961°N, 118.1839°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
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 | 67 km |
| 1994 | WEST COAST, USA | Earthquake | 0.1 m | 57 | 45 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | - | - | 45 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 2.5 in | Wettest |
| February | 49°F (9°C) | 2.4 in | |
| March | 54°F (12°C) | 1.7 in | |
| April | 59°F (15°C) | 0.6 in | |
| May | 67°F (20°C) | 0.4 in | |
| June | 75°F (24°C) | 0.1 in | |
| July | 83°F (28°C) | 0.0 in | Warmest, Driest |
| August | 82°F (28°C) | 0.0 in | |
| September | 75°F (24°C) | 0.2 in | |
| October | 64°F (18°C) | 0.6 in | |
| November | 53°F (11°C) | 0.7 in | |
| December | 45°F (7°C) | 1.8 in | Coldest |
Acton has a seasonal temperature swing of 38°F / from 45°F in December to 83°F in July. Total annual precipitation is 10.9 inches, with January being the wettest month (2.5") and July the driest (0.0").