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Charleston city, SC

ZIP 29424 — Climate & Environment

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Low Snow Area

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 29424

Disaster Risk (FEMA NRI)

County-linked natural hazard risk from FEMA National Risk Index — useful for comparing insurance and disaster exposure.

FEMA’s National Risk Index rates natural-hazard risk for Charleston city, SC as Relatively High (composite score 98.6), which is among the highest nationally. The strongest component scores on US5 are hurricane (99.6) and wildfire (93.9). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Overall rating
Relatively High
Risk index
98.6
Flood risk
89.9
Wildfire risk
93.9
Hurricane risk
99.6
Earthquake risk
98.8
Tornado risk
71.0
Winter weather risk
84.2
Hail risk
60.9
Air Quality (EPA AQI)

County-level annual air quality from EPA. Good days = healthy to breathe; unhealthy = sensitive groups or worse.

47
Median AQI
59.0%
Good Days

Air quality healthy to breathe

0.4%
Unhealthy / Hazardous

Sensitive groups or worse

Climate & Weather in ZIP Code 29424

Climate normals for Charleston city, SC show little to no average snow and around 44.3 inches of annual precipitation. Pair that with FEMA NRI hazard context (overall rating Relatively High) when evaluating long-term housing and insurance exposure.

7-day weather forecast

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Sunrise, sunset & moon

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Monthly Temperature

30-year climate normals (avg. monthly temperature)

Climate Data
Hardiness Zone
N/A
Annual Snow Days
0
Annual Precipitation
44.26 in
FEMA NRI rating
Relatively High

Climate & Environment key statistics

Climate statistics
Climate
Annual precip (in)44.26
Snow days0
Broadband access100.0%
Risk & Air Quality statistics
Risk & Air Quality
NRI ratingRelatively High
NRI risk index98.6
Flood risk (NRI)89.9
Wildfire risk (NRI)93.9
Hurricane risk (NRI)99.6
IRS net migration49
Median AQI47
Good AQI days59.0%