# Atmospheric fog not working

**URL:** <https://forums.unrealengine.com/t/atmospheric-fog-not-working/362256>\
**Category:** Rendering\
**Tags:** Atmospheric-Fog, unreal-engine, lighting-problem, Lighting, question\
**Created:** [June 28, 2016, 7:53am UTC](https://forums.unrealengine.com/t/atmospheric-fog-not-working/362256 "2016-06-28T07:53:12Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![anonymous\_user\_5ea15444](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_5ea15444](https://forums.unrealengine.com/u/anonymous_user_5ea15444)\
**Post date:** [June 28, 2016, 7:53am UTC](https://forums.unrealengine.com/t/atmospheric-fog-not-working/362256/1 "2016-06-28T07:53:12Z")

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I’ve been trying to follow the lighting quick start guide, but whenever I add atmospheric fog to a level nothing happens. I’ve tried changing all of its settings and made sure that my view mode is set to lit, but it’s still not working properly.

What I’ve been doing instead is using BP\_Sky\_Sphere, since it gives a somewhat similar effect, but is there any disadvantage or limitations to using the sky sphere over atmospheric fog?

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**Author:** ![FullHPetroL](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@FullHPetroL](https://forums.unrealengine.com/u/FullHPetroL)\
**Post date:** [July 29, 2016, 9:25am UTC](https://forums.unrealengine.com/t/atmospheric-fog-not-working/362256/2 "2016-07-29T09:25:35Z")

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In the viewport go to Show/Common Show Flags/Fog - check if it is checked.

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**Author:** ![m4d3](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@m4d3](https://forums.unrealengine.com/u/m4d3)\
**Post date:** [July 29, 2016, 9:35am UTC](https://forums.unrealengine.com/t/atmospheric-fog-not-working/362256/3 "2016-07-29T09:35:46Z")

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Have you assigned a directional light source to be used with the athmospheric fog?

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**Author:** ![Digital\_Vitovt](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Digital\_Vitovt](https://forums.unrealengine.com/u/Digital_Vitovt)\
**Post date:** [April 26, 2019, 2:19pm UTC](https://forums.unrealengine.com/t/atmospheric-fog-not-working/362256/4 "2019-04-26T14:19:00Z")

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Tnx a lot, man. U really saved me:)

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**Author:** ![seedtech](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@seedtech](https://forums.unrealengine.com/u/seedtech)\
**Post date:** [March 30, 2022, 12:47pm UTC](https://forums.unrealengine.com/t/atmospheric-fog-not-working/362256/5 "2022-03-30T12:47:13Z")

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YES! Thank you! Ive just spent 3.5hrs trying to figure out why my machine was displaying my scene differently to the same scene on another machine! Thought my graphics card was on the way out, so I updated that. Cleared out all the cache…then read this post. I must have hit ALT+F at somepoint to hide the fog! FFS! lol