What visibility condition is a sign of stable air?

Stable air usually exhibits characteristics that maintain uniform conditions, which can include visibility factors. Low visibility with haze is a sign often associated with stable air because stable air tends to inhibit vertical motion and mixing. This lack of turbulence can lead to the accumulation of pollutants and moisture near the ground, resulting in haze.

In contrast, good visibility and clear skies are typically signs of unstable air, where vertical mixing encourages dispersion of particles and pollutants. Varying visibility indicates fluctuations that are more aligned with unstable conditions, where air movement results in changes. Thus, low visibility with haze effectively represents the characteristics of stable air, as it suggests a lack of turbulent mixing and the presence of moisture that can result from stable atmospheric conditions.