Sunol, CA
Full City Profile · California · Alameda County County
3.7
/5.0
B+
Good
931
Population
33/sq mi density
$182,250
Median Income
$94,218 per capita
$1,514,900
Home Value
$1,434,964 Zillow
$3,501
Median Rent
28.6% income on rent
60°F
Avg Temperature
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$182,250 median income, 6.6% unemployment
D
Affordability
2.0 / 5.0
$1,514,900 home value, $3,501/mo rent
A+
Education
4.9 / 5.0
48.3% bachelor's degree or higher
Sunol enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 48°F in January while summers reach 72°F in July. Annual precipitation totals 15.2 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 49.
Temperature
48°F Jan (9°C)
72°F Jul (22°C)
| Annual Average | 59.9°F |
| 11% above US avg | |
| January Average | 48°F (9°C) |
| July Average | 72°F (22°C) |
Geography
| Elevation | 164 ft (50 m) |
| Area | 27.8 sq mi (71.9 km²) |
| Population Density | 33/sq mi |
| Coordinates | 37.5859°N, 121.8805°W |
| Timezone | America/Los_Angeles |
| County | Alameda County County |
| Nearest Airport | Norman Y Mineta San Jose International (SJC) 16 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 49.0 |
| Rating | Good |
| Good Days % | 53.0% |
| Unhealthy Days | 1 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0341 ppm |
| NO₂ (Nitrogen Dioxide) | 12.9 ppb |
| SO₂ (Sulfur Dioxide) | 0.09 ppb |
| CO (Carbon Monoxide) | 0.41 ppm |
| PM2.5 (Fine Particles) | 6.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 99.8 / 100 |
| Social Vulnerability | 27.5 / 100 |
| Community Resilience | 91.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Earthquake | Very High |
| Wildfire | Relatively High |
| Flood | Very High |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively High |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | No Rating |
| Landslide | Relatively High |
| Coastal Flood | Relatively High |
| Tsunami | Relatively Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
5 tsunamis recorded within 500 km. Highest wave on record: 4.5 m (15 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1868 | N. CALIFORNIA | Eruption + Earthquake | 4.5 m | 30 | 23 km |
| 1989 | N. CALIFORNIA | Earthquake | 1.0 m | 62 | 61 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | - | 38 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | - | 56 km |
| 1865 | N. CALIFORNIA | Eruption + Earthquake | - | - | 43 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (172 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 172 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 48°F (9°C) | 2.8 in | Coldest |
| February | 50°F (10°C) | 2.9 in | Wettest |
| March | 54°F (12°C) | 2.3 in | |
| April | 57°F (14°C) | 1.1 in | |
| May | 62°F (17°C) | 0.6 in | |
| June | 68°F (20°C) | 0.1 in | |
| July | 72°F (22°C) | 0.0 in | Warmest, Driest |
| August | 72°F (22°C) | 0.1 in | |
| September | 70°F (21°C) | 0.1 in | |
| October | 64°F (18°C) | 0.8 in | |
| November | 54°F (12°C) | 1.7 in | |
| December | 48°F (9°C) | 2.8 in |
Sunol has a seasonal temperature swing of 25°F / from 48°F in January to 72°F in July. Total annual precipitation is 15.2 inches, with February being the wettest month (2.9") and July the driest (0.0").