Chicago, IL – Thick fog has developed across northern Illinois, reducing visibility to a quarter-mile or less. Drivers should use caution while traveling Monday morning.
According to the National Weather Service (NWS) Chicago, patchy dense fog is creating hazardous conditions, especially in interior northern Illinois. Motorists may experience sudden drops in visibility and rapidly changing road conditions. The fog should improve by mid-morning as temperatures rise.
Drivers should allow extra travel time and slow down, especially in low-lying areas. The NWS advises using low-beam headlights and increasing following distance to avoid accidents. Some areas could see visibility fluctuate quickly, making conditions unpredictable.
The advisory remains in effect through 7:30 a.m. Monday, with potential lingering fog until 10 a.m. Commuters near northwest Chicago suburbs and Rockford should stay alert. Officials recommend checking local weather updates before heading out.
Traffic delays are possible due to the fog. Drivers should remain patient and stay prepared for sudden slowdowns. The NWS encourages caution until visibility improves later in the morning.
For the latest forecast updates, visit weather.gov.
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