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  1. Fog - Wikipedia

    Fog is a visible aerosol consisting of tiny water droplets or ice crystals held in the air near the Earth 's surface. [1][2] Fog can be …

  2. Fog | Definition, Formation, Types, & Facts | Britannica

    Jul 12, 2026 · Fog is a cloud of small water droplets near ground level. It is formed by the condensation of water vapor on tiny …

  3. Mist, fog, and haze: What's the difference? - Met Office

    Sep 10, 2025 · Fog is essentially a cloud at ground level that causes a reduction in visibility to less than 1,000 metres. It forms when …

  4. What is fog? - Met Office

    Fog, like clouds, is caused by tiny water droplets suspended in the air, but not all fog forms in the same way and there are a few …

  5. The fog is alive: Researchers discover bacteria in fog ...

    May 14, 2026 · The team solved this by studying a type of fog that forms in still air called radiation fog. When the ground cools at …

  6. The strange science of how fog forms - BBC Science Focus Magazine

    Jan 16, 2025 · Fog is made up of molecules of water vapour, suspended in the air as tiny droplets of water but lingering close to the …

  7. Fog - Simple English Wikipedia, the free encyclopedia

    These water droplets make up the fog or mist. There are many types of fog, classified according to what makes the condensation. …