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Natural hazards · Westmont

Westmont, IL natural hazards

Most of the natural-hazard damage FEMA expects in Westmont comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 36 claims here since 1978. 6 federal disasters brought FEMA money into town.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations
Expected damage

How exposed is Westmont?

16
Very low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Westmont to be higher than in 16% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding41%Cold waves26%Tornadoes22%Everything else10%
By hazard

What Westmont faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Inland flooding

41% of expected damage
Below average · higher than 31% of U.S. places
Recorded about 3 times a year in the area

Cold waves

26% of expected damage
Well below average · higher than 21% of U.S. places
Recorded about 5 times a year in the area

Tornadoes

22% of expected damage
Well above average · higher than 75% of U.S. places

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingDroughtAvalanchesTsunamisVolcanic activity
Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.
Flood insurance claims

Does Westmont flood?

Every paid claim on a federal flood insurance policy in Westmont, from FEMA’s records.

36paid claims since 1978
$741Kpaid to owners
7homes flooded more than once
19782026

Biggest named events

  • Mid-spring storms: 6 claims, $368K

Homes that flooded again and again

■ FEMA “severe repetitive loss” (1) ■ flooded 2+ times

of homes in flood zones
are insured
of all homes
are insured
No community discount. Westmont isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: DuPage County.

What’s been done with FEMA grants

3flood-prone properties bought out and cleared
Disasters that hit Westmont

6 federal disasters brought FEMA money here

Disasters the President declared that paid out in Westmont itself: aid to households, or repair grants to the Village of Westmont.

Brought FEMA money into WestmontDeclared for DuPage County only
2013

Severe Storms, Straight-Line Winds, and Flooding

176 households applied for aid $879K aid approved $10K to the Village of Westmont for repairs
2011

Severe Winter Storm and Snowstorm

$23K to the Village of Westmont for repairs
2010

Severe Storms and Flooding

60 households applied for aid $131K aid approved
2008

Severe Storms and Flooding

12 households applied for aid $12K aid approved
2000

Illinois Winter Snow Storms

$31K to the Village of Westmont for repairs
1999

Il-Winter Storm 1/1/99

$29K to the Village of Westmont for repairs
DuPage County has had 14 natural disasters declared since 1953, most often floods and winter storms.
Around Westmont

Westmont and the towns around it

Downers Grove: Low, mostly inland floodingWillowbrook: Low, mostly inland floodingClarendon Hills: Very low, mostly inland floodingOak Brook: Low, mostly inland floodingHinsdale: High, mostly inland floodingDarien: Low, mostly inland floodingDowners Grove: Low, mostly inland floodingYork: Low, mostly inland floodingWoodridge: Low, mostly inland floodingLisle: Low, mostly inland floodingLisle: Low, mostly inland floodingLombard: Low, mostly inland floodingBurr Ridge: Moderate, mostly inland floodingOakbrook Terrace: Low, mostly inland floodingProviso: High, mostly inland floodingElmhurst: High, mostly inland floodingWestern Springs: High, mostly inland floodingIndian Head Park: High, mostly inland floodingLemont: Low, mostly inland floodingWillow Springs: High, mostly inland floodingLyons: High, mostly inland floodingLemont: Low, mostly inland floodingMilton: Moderate, mostly inland floodingAddison: Low, mostly inland floodingVilla Park: Low, mostly inland floodingBerkeley: Moderate, mostly inland floodingNorthlake: High, mostly inland floodingLeyden: Moderate, mostly inland floodingWestmont: Very low, mostly inland flooding WestmontDowners GroveWillowbrookClarendon HillsOak BrookHinsdaleDarienDowners GroveYork
Very lowLowModerateHighVery high
Hinsdalemostly inland floodingHigh
Yorkmostly inland floodingLow
Willowbrookmostly inland floodingLow
Downers Grovemostly inland floodingLow
Oak Brookmostly inland floodingLow
Downers Grovemostly inland floodingLow
Darienmostly inland floodingLow
Westmontmostly inland floodingVery low
Clarendon Hillsmostly inland floodingVery low
About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.
Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Westmont covers 5 census tracts, combined by population.
Money that reached townFlood claims are matched to Westmont’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Village of Westmont. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Westmont total about $5.9M a year, counting buildings, people and crops.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01
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