Oswego, IL
Local storm history & FEMA National Risk Index data
Oswego is rated Relatively Low for overall natural hazard risk — lower risk than most US counties — based on FEMA's National Risk Index for Kendall County, IL. The county's highest-rated hazards are cold wave, tornado, and strong wind.
Storm events near Oswego
NOAA-recorded tornado, hail, and flood events within 25 miles of Oswego's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Oswego 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 Kendall County's FEMA National Risk Index scores, covering Oswego along with the rest of the county, not a Oswego-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 14.2 | Very Low |
| Inland Flooding | 79.7 | Relatively Moderate |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 66.5 | Relatively Low |
| Heat Wave | 61.9 | Relatively Low |
| Tornado | 89.7 | Relatively Moderate |
| Avalanche | — | Not Applicable |
| Cold Wave | 95.9 | Relatively High |
| Drought | 45.6 | Relatively Low |
| Hail | 23.4 | Very Low |
| Hurricane | 9.9 | Very Low |
| Ice Storm | 41.4 | Relatively Low |
| Landslide | 36.2 | Very Low |
| Lightning | 41.2 | Relatively Low |
| Strong Wind | 84.5 | Relatively High |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 50.2 | Relatively Low |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Kendall County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Kendall County:
More on Kendall County:
Frequently asked questions
What natural hazards is Oswego, IL at risk of?
Oswego is rated Relatively Low for overall natural hazard risk by FEMA's National Risk Index — lower risk than most US counties. The highest-rated hazards for Kendall County, where Oswego is located, are cold wave, tornado, and strong wind.
What is Oswego's biggest natural hazard risk?
Cold Wave is the highest-rated hazard for Kendall County, where Oswego is located, scoring 95.9 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Oswego a high-risk area for natural disasters?
No — Oswego carries lower risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Low" for Kendall County.
Has Oswego had tornadoes, hail, or flooding?
NOAA has recorded 91 tornado, 276 hail, 166 inland flooding events within 25 miles of Oswego since 2016.