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Riverside city, CA

ZIP 92521 — Climate & Environment

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

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 92521

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 Riverside city, CA as Very High (composite score 99.9), which is among the highest nationally. The strongest component scores on US5 are wildfire (100.0) and flood (99.9). 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
Very High
Risk index
99.9
Flood risk
99.9
Wildfire risk
100.0
Hurricane risk
12.0
Earthquake risk
99.8
Tornado risk
86.7
Winter weather risk
66.8
Hail risk
81.4
Air Quality (EPA AQI)

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

87
Median AQI
10.6%
Good Days

Air quality healthy to breathe

37.2%
Unhealthy / Hazardous

Sensitive groups or worse

Climate & Weather in ZIP Code 92521

Climate normals for Riverside city, CA show limited published climate normals on US5. Pair that with FEMA NRI hazard context (overall rating Very 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

No monthly temperature data

Climate Data
Hardiness Zone
10a
Annual Snow Days
N/A
Annual Precipitation
N/A
FEMA NRI rating
Very High

Climate & Environment key statistics

Climate statistics
Climate
Hardiness zone10a
Risk & Air Quality statistics
Risk & Air Quality
NRI ratingVery High
NRI risk index99.9
Flood risk (NRI)99.9
Wildfire risk (NRI)100.0
Hurricane risk (NRI)12.0
Median AQI87
Good AQI days10.6%