Water Tower B C D E RX

No perimeter has been mapped for this fire; the map shows its point of origin. Point of origin 37.681, -88.996.

Live radar at the fire Forecast for Marion

Size

148 acres

Containment

Not reported

Discovered

March 18, 2026 at 9:53 AM CDT

Cause

Undetermined

County

Williamson County

State

Illinois

Protecting agency

USFWS

Jurisdiction

USFWS

Land ownership at origin

USFWS

Incident type

Prescribed fire

Unique fire identifier

2026-ILCOR-260272

IRWIN identifier

D8A4E408-0F6A-446A-A791-DE5BD510E35F

• Wind up to 8 mph from the north
• Relative humidity as low as 61%
• High of 83°F

National Weather Service hourly forecast for the fire’s point of origin, next 24 hours.

Full forecast for Marion, IL

Red Flag Warnings and Fire Weather Watches covering the fire's point of origin.

No Red Flag Warning or Fire Weather Watch is in force at the fire.

NOAA’s Hazard Mapping System analysts drew light smoke over the fire’s origin in satellite imagery today (Mon, 10:00 AM CDT to Mon, 12:00 PM CDT).

NOAA’s smoke model forecasts near-surface smoke at the origin peaking at 1.1 µg/m³ around Mon, 2:00 PM CDT over the next 48 hours.

Smoke and fire layers on the radar

• Marion, IL5 miles northeast of the fire’s origin
• Crainville, IL6 miles northwest of the fire’s origin
• Energy, IL7 miles north of the fire’s origin
• Carterville, IL7 miles northwest of the fire’s origin
• Herrin, IL9 miles north of the fire’s origin
• Goreville, IL9 miles south of the fire’s origin