diff --git a/src/document/migrate-scene-document.ts b/src/document/migrate-scene-document.ts
index 4c0b3471..6ed565ca 100644
--- a/src/document/migrate-scene-document.ts
+++ b/src/document/migrate-scene-document.ts
@@ -165,6 +165,7 @@ import {
 import {
   BOX_BRUSH_SCENE_DOCUMENT_VERSION,
   ANIMATION_PLAYBACK_SCENE_DOCUMENT_VERSION,
+  ATMOSPHERE_POLISH_SCENE_DOCUMENT_VERSION,
   AUTHORED_TERRAIN_COLLISION_SCENE_DOCUMENT_VERSION,
   AUTHORED_TERRAIN_FOUNDATION_SCENE_DOCUMENT_VERSION,
   AUTHORED_TERRAIN_PAINT_SCENE_DOCUMENT_VERSION,
@@ -1019,6 +1020,21 @@ function readAdvancedRenderingSettings(
         distanceFog?.renderDistance,
         "world.advancedRendering.distanceFog.renderDistance",
         defaults.distanceFog.renderDistance
+      ),
+      skyBlend: readOptionalNonNegativeFiniteNumber(
+        distanceFog?.skyBlend,
+        "world.advancedRendering.distanceFog.skyBlend",
+        defaults.distanceFog.skyBlend
+      ),
+      horizonStrength: readOptionalNonNegativeFiniteNumber(
+        distanceFog?.horizonStrength,
+        "world.advancedRendering.distanceFog.horizonStrength",
+        defaults.distanceFog.horizonStrength
+      ),
+      heightFalloff: readOptionalNonNegativeFiniteNumber(
+        distanceFog?.heightFalloff,
+        "world.advancedRendering.distanceFog.heightFalloff",
+        defaults.distanceFog.heightFalloff
       )
     },
     godRays: {
@@ -5679,6 +5695,7 @@ export function migrateSceneDocument(source: unknown): SceneDocument {
     source.version !== DYNAMIC_GLOBAL_ILLUMINATION_SCENE_DOCUMENT_VERSION &&
     source.version !== DISTANCE_FOG_SCENE_DOCUMENT_VERSION &&
     source.version !== GOD_RAYS_SCENE_DOCUMENT_VERSION &&
+    source.version !== ATMOSPHERE_POLISH_SCENE_DOCUMENT_VERSION &&
     source.version !== SCENE_DOCUMENT_VERSION &&
     source.version !== FOLLOW_ACTOR_PATH_SMOOTH_SCENE_DOCUMENT_VERSION
   ) {
diff --git a/src/document/scene-document-validation.ts b/src/document/scene-document-validation.ts
index 3879e82f..8155a31e 100644
--- a/src/document/scene-document-validation.ts
+++ b/src/document/scene-document-validation.ts
@@ -1239,6 +1239,41 @@ function validateWorldSettings(
     );
   }
 
+  if (!isFiniteNumberInRange(advancedRendering.distanceFog.skyBlend, 0, 1)) {
+    diagnostics.push(
+      createDiagnostic(
+        "error",
+        "invalid-advanced-rendering-distance-fog-sky-blend",
+        "Advanced rendering distance fog sky blend must be a finite number between 0 and 1.",
+        "world.advancedRendering.distanceFog.skyBlend"
+      )
+    );
+  }
+
+  if (
+    !isFiniteNumberInRange(advancedRendering.distanceFog.horizonStrength, 0, 1)
+  ) {
+    diagnostics.push(
+      createDiagnostic(
+        "error",
+        "invalid-advanced-rendering-distance-fog-horizon-strength",
+        "Advanced rendering distance fog horizon strength must be a finite number between 0 and 1.",
+        "world.advancedRendering.distanceFog.horizonStrength"
+      )
+    );
+  }
+
+  if (!isNonNegativeFiniteNumber(advancedRendering.distanceFog.heightFalloff)) {
+    diagnostics.push(
+      createDiagnostic(
+        "error",
+        "invalid-advanced-rendering-distance-fog-height-falloff",
+        "Advanced rendering distance fog height falloff must be a non-negative finite number.",
+        "world.advancedRendering.distanceFog.heightFalloff"
+      )
+    );
+  }
+
   if (!isBoolean(advancedRendering.godRays.enabled)) {
     diagnostics.push(
       createDiagnostic(
diff --git a/src/document/scene-document.ts b/src/document/scene-document.ts
index 0216ceea..14f4f553 100644
--- a/src/document/scene-document.ts
+++ b/src/document/scene-document.ts
@@ -29,7 +29,8 @@ import {
 } from "../sequencer/project-sequences";
 import type { Terrain } from "./terrains";
 
-export const SCENE_DOCUMENT_VERSION = 87 as const;
+export const SCENE_DOCUMENT_VERSION = 88 as const;
+export const ATMOSPHERE_POLISH_SCENE_DOCUMENT_VERSION = 88 as const;
 export const GOD_RAYS_SCENE_DOCUMENT_VERSION = 87 as const;
 export const DISTANCE_FOG_SCENE_DOCUMENT_VERSION = 86 as const;
 export const DYNAMIC_GLOBAL_ILLUMINATION_SCENE_DOCUMENT_VERSION = 85 as const;
diff --git a/src/document/world-settings.ts b/src/document/world-settings.ts
index c0d9182c..c9b03447 100644
--- a/src/document/world-settings.ts
+++ b/src/document/world-settings.ts
@@ -174,6 +174,9 @@ export interface AdvancedRenderingDistanceFogSettings {
   farDistance: number;
   strength: number;
   renderDistance: number;
+  skyBlend: number;
+  horizonStrength: number;
+  heightFalloff: number;
 }
 
 export interface AdvancedRenderingGodRaysSettings {
@@ -291,6 +294,9 @@ const DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_NEAR_DISTANCE = 70;
 const DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_FAR_DISTANCE = 180;
 const DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_STRENGTH = 0.85;
 const DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_RENDER_DISTANCE = 220;
+const DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_SKY_BLEND = 0.35;
+const DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_HORIZON_STRENGTH = 0.55;
+const DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_HEIGHT_FALLOFF = 0.012;
 const DEFAULT_ADVANCED_RENDERING_GOD_RAYS_INTENSITY = 0.35;
 const DEFAULT_ADVANCED_RENDERING_GOD_RAYS_DECAY = 0.92;
 const DEFAULT_ADVANCED_RENDERING_GOD_RAYS_EXPOSURE = 0.28;
@@ -556,7 +562,10 @@ export function createDefaultAdvancedRenderingSettings(): AdvancedRenderingSetti
       nearDistance: DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_NEAR_DISTANCE,
       farDistance: DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_FAR_DISTANCE,
       strength: DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_STRENGTH,
-      renderDistance: DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_RENDER_DISTANCE
+      renderDistance: DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_RENDER_DISTANCE,
+      skyBlend: DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_SKY_BLEND,
+      horizonStrength: DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_HORIZON_STRENGTH,
+      heightFalloff: DEFAULT_ADVANCED_RENDERING_DISTANCE_FOG_HEIGHT_FALLOFF
     },
     godRays: {
       enabled: false,
@@ -1087,6 +1096,9 @@ export function areAdvancedRenderingSettingsEqual(
     left.distanceFog.farDistance === right.distanceFog.farDistance &&
     left.distanceFog.strength === right.distanceFog.strength &&
     left.distanceFog.renderDistance === right.distanceFog.renderDistance &&
+    left.distanceFog.skyBlend === right.distanceFog.skyBlend &&
+    left.distanceFog.horizonStrength === right.distanceFog.horizonStrength &&
+    left.distanceFog.heightFalloff === right.distanceFog.heightFalloff &&
     left.godRays.enabled === right.godRays.enabled &&
     left.godRays.intensity === right.godRays.intensity &&
     left.godRays.decay === right.godRays.decay &&