Fog symbol, line drawing — Original line drawing. Not an agency logo, and not an emoji.

Fog

Also called fog icon, foggy

Forecast icon on a weather app or a public forecast table.

Fog meaning

Fog, as a forecast icon, means suspended water droplets are expected to restrict visibility. Mist and haze are different icons. MetService’s fog is under one kilometre.

At a glance

System: Forecast icon, with a station-plot note
Used for: Expected fog
Not the same as: Mist, haze, smoke, or U+1F32B

A forecast icon for fog. Not mist, not haze, and not the fog character.

The name. Fog is suspended droplets that cut visibility. MetService’s own cut is under one kilometre. Mist is the neighbor, not the synonym.

Download drawing

Where it comes from

WWIS lists fog, and lists mist, haze, and smoke elsewhere. The Met Office prints fog and mist as two icons. MetService defines fog, for its icons, as very small droplets reducing visibility at the ground to less than a kilometre. A station plot reports reduced visibility with a number and, when the air is thick enough, a present-weather sign. The forecast picture is not that sign. The Unicode fog character is not that sign either.

The line drawing is original to this cabinet. It is not an agency logo, a vendor icon, or the emoji for the same idea.

Weather

What it means

You are expected to have trouble seeing because of water droplets, not because of dust or smoke. How thick the fog must be depends on the service. This page uses MetService’s kilometre when it gives a number, and it does not pretend every agency shares that sentence. Haze is particles. Smoke is smoke. Both have pages.

Variants

On the plot

Visibility is a number beside the station model. Fog as present weather appears when the restriction is occurring. The forecast icon says the fog is expected. The plot says it was there.

Worth knowing

MetService describes fog as visibility at the ground below one kilometre, from very small water droplets. Source

Questions

What does a fog icon mean?

Fog is expected: droplets in the air that cut the view. MetService sets its own fog under one kilometre of visibility. Other services draw the icon without printing that sentence on the icon.

Are fog and mist the same symbol?

No. The Met Office and WWIS list both. Using one cloud-with-lines picture for either word is how the forecasts get flattened.

Often confusedMistMist is the thinner neighbor. WWIS and the Met Office both list it apart from fog. MetService’s fog line is one kilometre.

Often confusedFog characterThe fog character is a code point. Phone vendors draw it in their own colors. It is not a forecast.

Near this

Sources

Named when the entry depends on a text, a date, or a standard. Catalog numbers are not invented.

Your margin

Private. It stays in this browser and never joins the canon.

symbol.wiki, edited as Sigilla. Last reviewed 18 October 2026. A reading of public tradition, not a ruling.