Question

when the humidity is high and the temperature is low, fog often forms. why/

Answer 1

Fog begins to form when water vapor condenses into tiny liquid water droplets suspended in the air. This occurs from either added moisture in the air, or falling ambient air temperature. However, fog can form at lower humidities, and can sometimes fail to form with relative humidity at 100%.

Answer 2

Fog begins to form when water vapor condenses into tiny liquid water droplets suspended in the air. This occurs from either added moisture in the air, or falling ambient air temperature. However, fog can form at lower humidities, and can sometimes fail to form with relative humidity at 100%.