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Santa Margarita CDP, CA

ZIP 93453 — Climate & Environment

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

Middle ClassLow Snow AreaRemote Work Hub

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 93453

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 Santa Margarita CDP, CA as Relatively High (composite score 95.9), which is among the highest nationally. The strongest component scores on US5 are wildfire (98.3) and flood (96.7). 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
95.9
Flood risk
96.7
Wildfire risk
98.3
Earthquake risk
97.9
Tornado risk
6.1
Winter weather risk
2.6
Hail risk
14.0
Air Quality (EPA AQI)

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

51
Median AQI
44.0%
Good Days

Air quality healthy to breathe

2.6%
Unhealthy / Hazardous

Sensitive groups or worse

Climate & Weather in ZIP Code 93453

Climate normals for Santa Margarita CDP, CA show little to no average snow and around 18.2 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
8b
Annual Snow Days
0
Annual Precipitation
18.2 in
FEMA NRI rating
Relatively High

Climate & Environment key statistics

Climate statistics
Climate
Hardiness zone8b
Annual precip (in)18.2
Snow days0
Broadband access78.9%
Risk & Air Quality statistics
Risk & Air Quality
NRI ratingRelatively High
NRI risk index95.9
Flood risk (NRI)96.7
Wildfire risk (NRI)98.3
IRS net migration99
Median AQI51
Good AQI days44.0%