Dense Fog — Williamson, Illinois

2025-07-08 · Williamson, Illinois

Wider weather episode

Calm winds and lingering low-level moisture from rainfall on the 7th resulted in the formation of areas of dense fog in Southern Illinois along and south of IL-13 during the late night to early morning hours.

Source: NOAA Storm Events Database, event_id 1285227. Narrative written by the NWS forecast office that issued the report.