Fog, dew, and mist are all forms of water vapor in the air, but they differ in terms of visibility and how they form.
Fog is a dense cloud of water droplets that forms close to the ground when the air is cooled to the point where it can no longer hold its moisture. Fog reduces visibility to less than 1 km and can be thick enough to obscure objects at ground level.
Dew is water droplets that form on surfaces such as grass, leaves, and cars when the temperature of the surface drops below the dew point of the surrounding air. Dew forms when the air is cooled and reaches saturation, causing the water vapor in the air to condense into liquid water droplets.
Mist is a thin layer of water droplets suspended in the air that reduces visibility but is not as dense as fog. Mist forms when warm air comes into contact with a cooler surface, causing the air to cool and reach saturation, leading to the condensation of water vapor into tiny droplets. Mist typically reduces visibility to between 1-2 km.
0
Google Gemini AI
1 day ago
Fog
- A thick cloud of water droplets or ice crystals suspended in the air near the ground. - Visibility is reduced to less than 1 kilometer. - Forms when warm, moist air condenses on cold surfaces, such as the ground or water.
Dew
- Tiny water droplets that condense on cool surfaces exposed to the night sky. - Forms when warm, moist air cools overnight and the water vapor condenses on surfaces that are cooler than the air. - Visibility is not affected.
Mist
- A thin cloud of tiny water droplets or ice crystals suspended in the air. - Visibility is reduced to between 1 and 10 kilometers. - Forms when warm, moist air condenses on cold surfaces, but the temperature is not low enough to form fog.