Duarte, CA
Full City Profile · California · Los Angeles County County
2.9
/5.0
C+
Fair
21,921
Population
3,267/sq mi density
$97,952
Median Income
$40,634 per capita
$710,700
Home Value
$786,383 Zillow
$1,991
Median Rent
32.9% income on rent
58°F
Avg Temperature
249
Violent Crime/100K
1,226 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$97,952 median income, 6.3% unemployment
C+
Affordability
2.6 / 5.0
$710,700 home value, $1,991/mo rent
F
Safety
1.0 / 5.0
249 violent crimes/100K
B+
Education
3.6 / 5.0
33.1% bachelor's degree or higher
Duarte enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 47°F in January while summers reach 74°F in July. Annual precipitation totals 22.5 inches. The area receives 0.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 80.
Temperature
47°F Jan (8°C)
74°F Jul (24°C)
| Annual Average | 58.4°F |
| 8% above US avg | |
| January Average | 47°F (8°C) |
| July Average | 74°F (24°C) |
Geography
| Elevation | 1,700 ft (518 m) |
| Area | 6.7 sq mi (17.3 km²) |
| Population Density | 3,267/sq mi |
| Coordinates | 34.1610°N, 117.9504°W |
| Timezone | America/Los_Angeles |
| County | Los Angeles County County |
| Nearest Airport | Ontario International (ONT) 21 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 | 65 km |
| 1994 | WEST COAST, USA | Earthquake | 0.1 m | 57 | 54 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | - | - | 15 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 47°F (8°C) | 5.2 in | |
| February | 46°F (8°C) | 5.7 in | Coldest, Wettest |
| March | 49°F (9°C) | 3.4 in | |
| April | 52°F (11°C) | 1.3 in | |
| May | 59°F (15°C) | 0.8 in | |
| June | 68°F (20°C) | 0.2 in | |
| July | 74°F (24°C) | 0.1 in | |
| August | 75°F (24°C) | 0.0 in | Warmest, Driest |
| September | 70°F (21°C) | 0.2 in | |
| October | 62°F (16°C) | 1.1 in | |
| November | 53°F (12°C) | 1.3 in | |
| December | 46°F (8°C) | 3.3 in |
Duarte has a seasonal temperature swing of 29°F / from 46°F in February to 75°F in August. Total annual precipitation is 22.5 inches, with February being the wettest month (5.7") and August the driest (0.0").