AtmostormCounty briefing

St. Clair County, IL

Severe-weather activation briefing

Generated 2026-09-20T14:18:42.817200+00:00

No active warnings

Radar over St. Clair County, IL

County exposure (baseline)

St. Clair County, IL has an estimated 257,400 residents, including 15 nursing homes, 5 mobile-home parks, 7 dialysis centers, 3 hospitals and 95 schools. This is the denominator behind “in the warned path”.