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Key Largo, FL
Full City Profile · Florida · Miami-Dade County County
2.9
/5.0
C+
Fair
12,069
Population
1,002/sq mi density
$78,906
Median Income
$50,950 per capita
$626,300
Home Value
$1,052,735 Zillow
$1,889
Median Rent
31.6% income on rent
78°F
Avg Temperature
330 sunny days/yr
2,772
Violent Crime/100K
9,039 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$78,906 median income, 2.6% unemployment
C
Affordability
2.2 / 5.0
$626,300 home value, $1,889/mo rent
F
Safety
1.0 / 5.0
2,772 violent crimes/100K (629% above avg)
A
Education
4.0 / 5.0
37.6% bachelor's degree or higher
Key Largo has a warm climate with an average annual temperature of 78°F (26°C). Winters average 69°F in January while summers reach 84°F in July. The area gets 330 sunny days per year. Annual precipitation totals 57.0 inches. Air quality is rated Good with a median AQI of 41.
Temperature
69°F Jan (21°C)
84°F Jul (29°C)
| Annual Average | 77.7°F |
| 44% above US avg | |
| January Average | 69°F (21°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 8 ft (2 m) |
| Area | 12.1 sq mi (31.2 km²) |
| Population Density | 1,002/sq mi |
| Coordinates | 25.1226°N, 80.4116°W |
| Timezone | America/New_York |
| County | Miami-Dade County County |
| Nearest Airport | Miami International (MIA) 47 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0383 ppm |
| NO₂ (Nitrogen Dioxide) | 15.8 ppb |
| SO₂ (Sulfur Dioxide) | 0.18 ppb |
| CO (Carbon Monoxide) | 0.31 ppm |
| PM2.5 (Fine Particles) | 7.5 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 99.6 / 100 |
| Social Vulnerability | 75.9 / 100 |
| Community Resilience | 42.9 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very High |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Very High |
| Hail | Relatively High |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | No Rating |
| Lightning | Very High |
| Drought | Relatively Moderate |
| Cold Wave | Very High |
| Landslide | Very Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 69°F (21°C) | 1.9 in | |
| February | 69°F (20°C) | 1.8 in | Coldest |
| March | 72°F (22°C) | 1.7 in | |
| April | 75°F (24°C) | 2.2 in | |
| May | 79°F (26°C) | 5.2 in | |
| June | 81°F (27°C) | 8.5 in | Wettest |
| July | 84°F (29°C) | 4.6 in | Warmest |
| August | 83°F (28°C) | 6.0 in | |
| September | 82°F (28°C) | 7.2 in | |
| October | 79°F (26°C) | 5.8 in | |
| November | 75°F (24°C) | 2.5 in | |
| December | 71°F (21°C) | 1.5 in | Driest |
Key Largo has a seasonal temperature swing of 16°F / from 69°F in February to 84°F in July. Total annual precipitation is 48.9 inches, with June being the wettest month (8.5") and December the driest (1.5").