What happens to visibility during the passage of a cold front?

The visibility during the passage of a cold front is generally poor but can improve afterward. As a cold front advances, it typically brings with it a band of precipitation, often resulting in overcast conditions, reduced visibility due to rain, fog, or low cloud cover. The shift in temperature and pressure associated with the front can lead to unstable atmospheric conditions, which often exacerbate poor visibility.

As the cold front passes and the weather stabilizes, visibility tends to improve due to the clearing of precipitation and the dissipation of any fog or low clouds. Although it may not become excellent immediately, the trend is towards better visibility as the conditions normalize following the frontal passage. This understanding is crucial for pilots, as it directly affects flight operations and navigation.