Illinois wildfire risk
102 counties scored 0 rated Very High
Will County has the highest wildfire risk in Illinois, scoring 56.2 out of 100 — rated "Very Low" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Will County | 56.2 | Very Low | 0 |
| 2 | Cook County | 55.8 | Very Low | 0 |
| 3 | Lake County | 44.9 | Very Low | 0 |
| 4 | DuPage County | 33.7 | Very Low | 0 |
| 5 | Kane County | 32.7 | Very Low | 0 |
| 6 | Winnebago County | 32.7 | Very Low | 0 |
| 7 | McHenry County | 31.6 | Very Low | 0 |
| 8 | Stephenson County | 27 | Very Low | 0 |
| 9 | Vermilion County | 22.7 | Very Low | 0 |
| 10 | Jo Daviess County | 21.5 | Very Low | 0 |
| 11 | LaSalle County | 21.3 | Very Low | 0 |
| 12 | Macon County | 21.2 | Very Low | 0 |
| 13 | Kankakee County | 20.3 | Very Low | 0 |
| 14 | Sangamon County | 18.8 | Very Low | 0 |
| 15 | Champaign County | 16.2 | Very Low | 0 |
| 16 | Fayette County | 15.8 | Very Low | 0 |
| 17 | Grundy County | 15.7 | Very Low | 0 |
| 18 | Marion County | 15.5 | Very Low | 0 |
| 19 | St. Clair County | 15.1 | Very Low | 0 |
| 20 | Madison County | 14.8 | Very Low | 0 |
| 21 | Kendall County | 14.2 | Very Low | 0 |
| 22 | Williamson County | 14.2 | Very Low | 0 |
| 23 | Whiteside County | 14.1 | Very Low | 0 |
| 24 | Montgomery County | 13.6 | Very Low | 0 |
| 25 | Carroll County | 13.1 | Very Low | 0 |
| 26 | Bureau County | 13 | Very Low | 0 |
| 27 | Shelby County | 12.6 | Very Low | 0 |
| 28 | Jackson County | 11.5 | Very Low | 0 |
| 29 | Ogle County | 11.4 | Very Low | 0 |
| 30 | Johnson County | 11.3 | Very Low | 0 |
| 31 | Effingham County | 10.9 | Very Low | 0 |
| 32 | Edgar County | 10 | Very Low | 0 |
| 33 | Peoria County | 9.8 | Very Low | 0 |
| 34 | Jefferson County | 9.7 | Very Low | 0 |
| 35 | Coles County | 9.5 | Very Low | 0 |
| 36 | Lee County | 9.4 | Very Low | 0 |
| 37 | Macoupin County | 9.3 | Very Low | 0 |
| 38 | Union County | 9.2 | Very Low | 0 |
| 39 | Christian County | 9 | Very Low | 0 |
| 40 | McLean County | 8.9 | Very Low | 0 |
| 41 | Rock Island County | 8.7 | Very Low | 0 |
| 42 | Saline County | 8.6 | Very Low | 0 |
| 43 | Boone County | 8.3 | Very Low | 0 |
| 44 | Pope County | 8.2 | Very Low | 0 |
| 45 | Clark County | 8.1 | Very Low | 0 |
| 46 | Tazewell County | 8 | Very Low | 0 |
| 47 | Clinton County | 7.9 | Very Low | 0 |
| 48 | Massac County | 7.6 | Very Low | 0 |
| 49 | Bond County | 7.5 | Very Low | 0 |
| 50 | Henry County | 7.1 | Very Low | 0 |
| 51 | DeKalb County | 6.4 | Very Low | 0 |
| 52 | Randolph County | 6.2 | Very Low | 0 |
| 53 | Franklin County | 5.8 | Very Low | 0 |
| 54 | Clay County | 5.3 | Very Low | 0 |
| 55 | Hardin County | 5.3 | Very Low | 0 |
| 56 | Adams County | 5.2 | Very Low | 0 |
| 57 | Fulton County | 4.9 | Very Low | 0 |
| 58 | Cumberland County | 4.7 | Very Low | 0 |
| 59 | Marshall County | 4.4 | Very Low | 0 |
| 60 | Putnam County | 4.4 | Very Low | 0 |
| 61 | Moultrie County | 4.3 | Very Low | 0 |
| 62 | Douglas County | 4.2 | Very Low | 0 |
| 63 | Piatt County | 4 | Very Low | 0 |
| 64 | Washington County | 3.9 | Very Low | 0 |
| 65 | Perry County | 3.8 | Very Low | 0 |
| 66 | Menard County | 3.6 | Very Low | 0 |
| 67 | Iroquois County | 3.5 | Very Low | 0 |
| 68 | Woodford County | 3.3 | Very Low | 0 |
| 69 | Richland County | 2.7 | Very Low | 0 |
| 70 | Livingston County | 2.6 | Very Low | 0 |
| 71 | Jasper County | 2.4 | Very Low | 0 |
| 72 | White County | 2.2 | Very Low | 0 |
| 73 | Alexander County | 2.1 | Very Low | 0 |
| 74 | De Witt County | 2.1 | Very Low | 0 |
| 75 | Crawford County | 2 | Very Low | 0 |
| 76 | Monroe County | 1.9 | Very Low | 0 |
| 77 | Ford County | 1.8 | Very Low | 0 |
| 78 | Morgan County | 1.8 | Very Low | 0 |
| 79 | Henderson County | 1.7 | Very Low | 0 |
| 80 | Mason County | 1.6 | Very Low | 0 |
| 81 | Logan County | 1.5 | Very Low | 0 |
| 82 | Wayne County | 1.5 | Very Low | 0 |
| 83 | Hancock County | 1.4 | Very Low | 0 |
| 84 | Gallatin County | 1.2 | Very Low | 0 |
| 85 | Hamilton County | 1.1 | Very Low | 0 |
| 86 | Knox County | 1.1 | Very Low | 0 |
| 87 | Mercer County | 1.1 | Very Low | 0 |
| 88 | Pike County | 1 | Very Low | 0 |
| 89 | McDonough County | 0.9 | Very Low | 0 |
| 90 | Edwards County | 0.8 | Very Low | 0 |
| 91 | Stark County | 0.8 | Very Low | 0 |
| 92 | Pulaski County | 0.7 | Very Low | 0 |
| 93 | Calhoun County | 0.6 | Very Low | 0 |
| 94 | Jersey County | 0.5 | Very Low | 0 |
| 95 | Lawrence County | 0.5 | Very Low | 0 |
| 96 | Wabash County | 0.4 | Very Low | 0 |
| 97 | Cass County | 0.3 | Very Low | 0 |
| 98 | Greene County | 0.3 | Very Low | 0 |
| 99 | Schuyler County | 0.3 | Very Low | 0 |
| 100 | Brown County | 0.2 | Very Low | 0 |
| 101 | Warren County | 0.2 | Very Low | 0 |
| 102 | Scott County | 0.1 | Very Low | 0 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Wildfire risk nationally:
Other hazard risks in Illinois:
Frequently asked questions
What is the highest wildfire risk county in Illinois?
Will County, IL has the highest wildfire risk in Illinois, with a FEMA National Risk Index score of 56.2 out of 100 (rated "Very Low").
What causes wildfire risk in Illinois?
Wildfire risk reflects expected annual losses to buildings, population, and agriculture from wildfire, adjusted for social vulnerability and community resilience. High scores cluster in the western US, where dry climate, fuel loads, and seasonal wind patterns combine with rapid suburban development into fire-prone terrain.