Downers Grove, IL
Local storm history & FEMA National Risk Index data
Downers Grove is rated Relatively High for overall natural hazard risk — higher risk than most US counties — based on FEMA's National Risk Index for DuPage County, IL. The county's highest-rated hazards are cold wave, tornado, and strong wind.
Storm events near Downers Grove
NOAA-recorded tornado, hail, and flood events within 25 miles of Downers Grove's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Downers Grove itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are DuPage County's FEMA National Risk Index scores, covering Downers Grove along with the rest of the county, not a Downers Grove-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 33.7 | Very Low |
| Inland Flooding | 98 | Relatively High |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 93.2 | Relatively Moderate |
| Heat Wave | 93.3 | Relatively Moderate |
| Tornado | 99.3 | Very High |
| Avalanche | — | Not Applicable |
| Cold Wave | 99.7 | Very High |
| Drought | 23.2 | Very Low |
| Hail | 53.8 | Relatively Low |
| Hurricane | 25.1 | Very Low |
| Ice Storm | 74 | Relatively Moderate |
| Landslide | 33 | Very Low |
| Lightning | 96.1 | Relatively High |
| Strong Wind | 99.2 | Very High |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 88.4 | Relatively High |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full DuPage County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in DuPage County:
More on DuPage County:
Frequently asked questions
What natural hazards is Downers Grove, IL at risk of?
Downers Grove is rated Relatively High for overall natural hazard risk by FEMA's National Risk Index — higher risk than most US counties. The highest-rated hazards for DuPage County, where Downers Grove is located, are cold wave, tornado, and strong wind.
What is Downers Grove's biggest natural hazard risk?
Cold Wave is the highest-rated hazard for DuPage County, where Downers Grove is located, scoring 99.7 out of 100 on FEMA's National Risk Index (rated "Very High").
Is Downers Grove a high-risk area for natural disasters?
Yes — Downers Grove carries higher risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively High" for DuPage County.
Has Downers Grove had tornadoes, hail, or flooding?
NOAA has recorded 82 tornado, 403 hail, 341 inland flooding events within 25 miles of Downers Grove since 2016.