Dense Fog — Union, Illinois

2025-01-31 · Union, Illinois

Wider weather episode

Following a period of evening rain and drizzle, dense fog developed overnight in much of Southern Illinois, with fog lingering along the I-64 corridor until around sunrise. Visibility improved as low clouds moved over the region.

Source: NOAA Storm Events Database, event_id 1229526. Narrative written by the NWS forecast office that issued the report.