Miami Valley school delays and closures today: Dense fog forces two-hour delays across Ohio; check affected districts

Several school districts across Ohio’s Miami Valley have announced two-hour delays today as dense fog reduces visibility, according to a WHIO-TV report.

The affected districts include Celina City Schools, Minster Local Schools and Parkway Local Schools in Mercer County, along with schools in Auglaize and Shelby counties.

In Auglaize County, New Bremen Local Schools, New Knoxville Schools and St. Marys City Schools have also announced two-hour delays. In Shelby County, Anna Local Schools, Botkins Local Schools, Fort Loramie Local Schools and Jackson Center Schools are among the districts affected.


The delays are intended to give students and staff additional time to travel safely amid reduced visibility.

How to check school delays and closures

Parents and guardians should check official school announcements for the latest information on delays and closures, as schedules may change depending on weather conditions.

Families are advised to monitor updates before leaving home to ensure they have the latest information about their schools.

National Weather Service issues Dense Fog Advisory

The National Weather Service (NWS) has issued a Dense Fog Advisory for parts of Ohio’s Miami Valley for Wednesday, October 21, 2026. The advisory was in effect until 10 a.m. EDT.

According to the NWS, visibility could drop to one-quarter mile or less in dense fog, potentially creating hazardous driving conditions.

The agency advised motorists to slow down, use their headlights and maintain a safe distance from vehicles ahead of them.

In a separate advisory concerning northeastern Indiana, the NWS warned that dense fog could spread westward into parts of Huntington County during the morning, causing rapid changes in visibility.

“Motorists should be prepared for rapid changes in visibility as this fog spreads west,” the advisory said.

The fog conditions have prompted precautionary measures across the region, with school districts adjusting their schedules to help protect students and staff.