Boise City, ID
Full City Profile · Idaho · Ada County County
4.2
/5.0
A
Great
235,701
Population
2,768/sq mi density
$81,308
Median Income
$48,274 per capita
$456,000
Home Value
$503,852 Zillow
$1,359
Median Rent
28.4% income on rent
53°F
Avg Temperature
A
Overall
4.2 / 5.0
Strong
A
Economy
4.3 / 5.0
$81,308 median income, 3.8% unemployment
B+
Affordability
3.5 / 5.0
$456,000 home value, $1,359/mo rent
A+
Education
4.7 / 5.0
46.6% bachelor's degree or higher
Boise City experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 32°F in January while summers reach 77°F in July. Annual precipitation totals 11.5 inches. The area receives 17.6 inches of snow annually. Air quality is rated Good with a median AQI of 44.
Temperature
32°F Jan (0°C)
77°F Jul (25°C)
| Annual Average | 53.2°F |
| 1% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 77°F (25°C) |
Geography
| Elevation | 2,743 ft (836 m) |
| Area | 83,673.6 sq mi (216,714.6 km²) |
| Population Density | 2,768/sq mi |
| Coordinates | 43.6002°N, 116.2317°W |
| Timezone | America/Boise |
| County | Ada County County |
| Nearest Airport | Boise Air Trml/Gowen Field (BOI) 3 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
| Good Days % | 62.8% |
| Unhealthy Days | 35 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0490 ppm |
| NO₂ (Nitrogen Dioxide) | 15.0 ppb |
| SO₂ (Sulfur Dioxide) | 0.29 ppb |
| CO (Carbon Monoxide) | 0.19 ppm |
| PM2.5 (Fine Particles) | 5.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 87.8 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 92.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively High |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Jordan Craters (111 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Jordan Craters | Volcanic field | 1,473 m (4,833 ft) | -1250 | 111 km |
| Black Butte Crater Lava Field | Shield | 1,478 m (4,849 ft) | -8400 | 159 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 1.4 in | |
| February | 38°F (3°C) | 1.0 in | |
| March | 45°F (7°C) | 1.3 in | |
| April | 51°F (11°C) | 1.2 in | |
| May | 60°F (16°C) | 1.5 in | |
| June | 68°F (20°C) | 0.8 in | |
| July | 77°F (25°C) | 0.2 in | Warmest |
| August | 76°F (24°C) | 0.2 in | Driest |
| September | 66°F (19°C) | 0.4 in | |
| October | 53°F (12°C) | 0.8 in | |
| November | 40°F (5°C) | 1.2 in | |
| December | 32°F (0°C) | 1.5 in | Coldest, Wettest |
Boise City has a seasonal temperature swing of 45°F / from 32°F in December to 77°F in July. Total annual precipitation is 11.5 inches, with December being the wettest month (1.5") and August the driest (0.2").