Dense Fog in Western Chester, Pennsylvania

Dense Fog December 28, 2025 – December 29, 2025 · Western Chester, Pennsylvania

What the National Weather Service wrote

Several hours of dense fog was observed at Chester County Airport.

The wider storm

Warm air lifting above antecedent cold and moist air resulted in dense fog across portions of eastern Pennsylvania starting just before midnight on December 29th. The fog dissipated as the front lifted north towards noon.

Source: NOAA Storm Events Database, event 1301907. Narratives are written by the National Weather Service forecast office that issued the report.

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