Iroquois County weather alerts
There are no active weather alerts for Iroquois County, IL right now.
Since 2016 the National Weather Service has issued about 865 alerts that included Iroquois County, roughly 87 a year. The most common is the flood advisory (133 from 2016 to 2025). The last tornado warning was issued on August 10, 2026. 58 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Iroquois County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Ford County, Benton County, Kankakee County, Vermilion County.
Iroquois County alert history
Alert events that included Iroquois County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Advisory | 133 | 10 | August 20, 2026 |
| Severe Thunderstorm Warning | 131 | 17 | August 12, 2026 |
| Dense Fog Advisory | 87 | 6 | September 28, 2026 |
| Wind Advisory | 76 | 5 | April 2, 2026 |
| Winter Weather Advisory | 63 | 2 | March 16, 2026 |
| Flood Warning | 61 | 3 | August 16, 2026 |
| Severe Thunderstorm Watch | 56 | 19 | August 21, 2026 |
| Tornado Watch | 32 | 6 | June 17, 2026 |
| Flood Watch | 28 | 11 | August 19, 2026 |
| Tornado Warning | 25 | 7 | August 10, 2026 |
| Frost Advisory | 23 | 3 | October 18, 2026 |
| Cold Weather Advisory | 23 | 3 | January 26, 2026 |
| Heat Advisory | 22 | 7 | September 5, 2026 |
| Flash Flood Warning | 18 | 4 | August 15, 2026 |
| Freeze Warning | 13 | 1 | April 20, 2026 |
| Red Flag Warning | 10 | 1 | February 18, 2026 |
| Winter Storm Watch | 10 | 0 | November 29, 2025 |
| Winter Storm Warning | 10 | 0 | November 29, 2025 |
| High Wind Warning | 8 | 1 | March 15, 2026 |
| Extreme Heat Warning | 7 | 2 | July 27, 2026 |
| Extreme Heat Watch | 6 | 0 | July 23, 2025 |
| Fire Weather Watch | 5 | 0 | May 16, 2025 |
| Freeze Watch | 5 | 1 | April 20, 2026 |
| Extreme Cold Warning | 4 | 0 | January 14, 2024 |
| High Wind Watch | 4 | 1 | March 15, 2026 |
| Dust Storm Warning | 2 | 0 | May 16, 2025 |
| Blizzard Warning | 1 | 0 | February 24, 2016 |
| Extreme Cold Watch | 1 | 0 | January 30, 2019 |
| Ice Storm Warning | 1 | 0 | January 1, 2021 |
| Snow Squall Warning | 0 | 2 | January 14, 2026 |
Tornado history in Iroquois County
58 tornadoes have been recorded in Iroquois County since 1950, injuring 18 people. That ranks 13 of 102 counties in Illinois. The most recent was on December 28, 2025 (rated unknown).
Strongest tornadoes in Iroquois County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| November 17, 2013 | EF3 | Champaign County | 29.8 mi | 880 yd | 0 | 6 |
| March 6, 1956 | F3 | Iroquois County | 9.4 mi | 500 yd | 0 | 6 |
| May 15, 1968 | F3 | Iroquois County | 7.1 mi | 400 yd | 0 | 0 |
| May 31, 1954 | F2 | Iroquois County | 24.2 mi | 400 yd | 0 | 2 |
| June 22, 1990 | F2 | Kankakee County | 3 mi | 100 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| December 28, 2025 | ? | Iroquois County | 4.9 mi | 25 yd | 0 | 0 |
| December 28, 2025 | EF0 | Iroquois County | 3.4 mi | 75 yd | 0 | 0 |
| December 28, 2025 | EF1 | Iroquois County | 9.5 mi | 150 yd | 0 | 0 |
| December 28, 2025 | EF0 | Iroquois County | 2.6 mi | 100 yd | 0 | 0 |
| May 14, 2025 | ? | Iroquois County | 0.2 mi | 25 yd | 0 | 0 |
About Iroquois County
- Population: 26,067 (2024 estimate)
- State: Illinois
- NOAA Weather Radio SAME code: 017075 (how to use it)