diff --git a/source/renderer/Renderer.cpp b/source/renderer/Renderer.cpp
index 138500020f..0912de7f03 100644
--- a/source/renderer/Renderer.cpp
+++ b/source/renderer/Renderer.cpp
@@ -1450,6 +1450,21 @@ void CRenderer::JSI_SetDepthTextureBits(JSContext* ctx, jsval newval)
 	m->shadow->SetDepthTextureBits(depthTextureBits);
 }
 
+jsval CRenderer::JSI_GetSky(JSContext*)
+{
+	return ToJSVal(m->skyManager.GetSkySet());
+}
+
+void CRenderer::JSI_SetSky(JSContext* ctx, jsval newval)
+{
+	CStrW skySet;
+
+	if (!ToPrimitive<CStrW>(ctx, newval, skySet))
+		return;
+
+	m->skyManager.SetSkySet(skySet);
+}
+
 void CRenderer::ScriptingInit()
 {
 	AddProperty(L"fastPlayerColor", &CRenderer::JSI_GetFastPlayerColor, &CRenderer::JSI_SetFastPlayerColor);
@@ -1461,6 +1476,7 @@ void CRenderer::ScriptingInit()
 	AddProperty(L"shadowZBias", &CRenderer::m_ShadowZBias);
 	AddProperty(L"disableCopyShadow", &CRenderer::m_DisableCopyShadow);
 	AddProperty(L"depthTextureBits", &CRenderer::JSI_GetDepthTextureBits, &CRenderer::JSI_SetDepthTextureBits);
+	AddProperty(L"skySet", &CRenderer::JSI_GetSky, &CRenderer::JSI_SetSky);
 
 	CJSObject<CRenderer>::ScriptingInit("Renderer");
 }
diff --git a/source/renderer/Renderer.h b/source/renderer/Renderer.h
index 94323c3590..477d36c79a 100644
--- a/source/renderer/Renderer.h
+++ b/source/renderer/Renderer.h
@@ -327,6 +327,8 @@ protected:
 	void JSI_SetUseDepthTexture(JSContext* ctx, jsval newval);
 	jsval JSI_GetDepthTextureBits(JSContext*);
 	void JSI_SetDepthTextureBits(JSContext* ctx, jsval newval);
+	jsval JSI_GetSky(JSContext*);
+	void JSI_SetSky(JSContext* ctx, jsval newval);
 	static void ScriptingInit();
 
 	// patch rendering stuff
diff --git a/source/renderer/SkyManager.cpp b/source/renderer/SkyManager.cpp
index 77c6d2a351..f3f20418d6 100644
--- a/source/renderer/SkyManager.cpp
+++ b/source/renderer/SkyManager.cpp
@@ -30,13 +30,26 @@
 // SkyManager implementation
 
 
+///////////////////////////////////////////////////////////////////
+// String names for each image, in order of the IMG_ constants
+const char* SkyManager::IMAGE_NAMES[5] = {
+	"front",
+	"back",
+	"right",
+	"left",
+	"top"
+};
+
+
 ///////////////////////////////////////////////////////////////////
 // Construction/Destruction
 SkyManager::SkyManager()
 {
-	// water
 	m_RenderSky = true;
 
+	// TODO: add a way to set the initial skyset before progressive load
+	m_SkySet = L"default";
+
 	for (uint i = 0; i < ARRAY_SIZE(m_SkyTexture); i++)
 		m_SkyTexture[i] = 0;
 
@@ -54,16 +67,6 @@ SkyManager::~SkyManager()
 // Progressive load of sky textures
 int SkyManager::LoadSkyTextures()
 {
-	// Note: this must be kept in sync with the IMG_ constants in SkyManager.h
-	static const char* IMAGE_NAMES[6] = {
-		"front",
-		"back",
-		"right",
-		"left",
-		"top",
-		"bottom"
-	};
-
 	const uint num_textures = ARRAY_SIZE(m_SkyTexture);
 
 	// yield after this time is reached. balances increased progress bar
@@ -73,10 +76,8 @@ int SkyManager::LoadSkyTextures()
 	while (cur_loading_tex < num_textures)
 	{
 		char filename[PATH_MAX];
-		// TODO: add a member variable and setter for this. (can't make this
-		// a parameter because this function is called via delay-load code)
-		static const char* const set_name = "day1";
-		snprintf(filename, ARRAY_SIZE(filename), "art/textures/skies/%s/%s.dds", set_name, IMAGE_NAMES[cur_loading_tex]);
+		snprintf(filename, ARRAY_SIZE(filename), "art/textures/skies/%s/%s.dds", 
+			CStr8(m_SkySet).c_str(), IMAGE_NAMES[cur_loading_tex]);
 		Handle ht = ogl_tex_load(filename);
 		if (ht <= 0)
 		{
@@ -104,7 +105,35 @@ void SkyManager::UnloadSkyTextures()
 		ogl_tex_free(m_SkyTexture[i]);
 		m_SkyTexture[i] = 0;
 	}
-	cur_loading_tex = 0; // so they will be reloaded if LoadWaterTextures is called again
+	cur_loading_tex = 0;
+}
+
+
+///////////////////////////////////////////////////////////////////
+// Switch to a different sky set (while the game is running)
+void SkyManager::SetSkySet( CStrW newSet )
+{
+	if( newSet != m_SkySet )
+	{
+		m_SkySet = newSet;
+
+		UnloadSkyTextures();
+
+		for( int i=0; i<ARRAY_SIZE(m_SkyTexture); i++ ) {
+			char filename[PATH_MAX];
+			snprintf(filename, ARRAY_SIZE(filename), "art/textures/skies/%s/%s.dds", 
+				CStr8(m_SkySet).c_str(), IMAGE_NAMES[i]);
+			Handle ht = ogl_tex_load(filename);
+			if (ht <= 0)
+			{
+				LOG(ERROR, LOG_CATEGORY, "SkyManager::SetSkySet failed on \"%s\"", filename);
+				return;
+			}
+			ogl_tex_set_wrap(ht, GL_CLAMP_TO_EDGE);
+			m_SkyTexture[i] = ht;
+			ogl_tex_upload(ht);
+		}
+	}
 }
 
 
@@ -200,20 +229,6 @@ void SkyManager::RenderSky()
 		glVertex3f( +D, +D, +D );
 	glEnd();
 
-	// Bottom face (negative Y)
-	// Note: These texcoords not be completely correct (haven't had a good texture to test with)
-	ogl_tex_bind( m_SkyTexture[IMG_BOTTOM] );
-	glBegin( GL_QUADS );
-		glTexCoord2f( 1, 0 );
-		glVertex3f( +D, -D, -D );
-		glTexCoord2f( 1, 1 );
-		glVertex3f( +D, -D, +D );
-		glTexCoord2f( 0, 1 );
-		glVertex3f( -D, -D, +D );
-		glTexCoord2f( 0, 0 );
-		glVertex3f( -D, -D, -D );
-	glEnd();
-
 	glPopMatrix();
 
 	glDepthMask( GL_TRUE );
diff --git a/source/renderer/SkyManager.h b/source/renderer/SkyManager.h
index 4fef45fd96..c1fed40762 100644
--- a/source/renderer/SkyManager.h
+++ b/source/renderer/SkyManager.h
@@ -19,18 +19,6 @@
 class SkyManager
 {
 public:
-	Handle m_SkyTexture[6];
-
-	// Indices into m_SkyTexture
-	// Note: these must be kept in sync with the string constants in LoadSkyTextures; 
-	//       perhaps there is a more clever way to do that.
-	static const int IMG_FRONT = 0;
-	static const int IMG_BACK = 1;
-	static const int IMG_RIGHT = 2;
-	static const int IMG_LEFT = 3;
-	static const int IMG_TOP = 4;
-	static const int IMG_BOTTOM = 5;
-
 	bool m_RenderSky;
 
 public:
@@ -57,7 +45,35 @@ public:
 	 */
 	void RenderSky();
 
+	/**
+	 * GetSkySet(): Return the currently selected sky set name
+	 */
+	inline CStrW GetSkySet() {
+		return m_SkySet;
+	}
+
+	/**
+	 * GetSkySet(): Set the sky set name, potentially loading the textures
+	 */
+	void SetSkySet(CStrW name);
+
 private:
+	/// Name of current skyset (a directory within art/textures/skies)
+	CStrW m_SkySet;
+
+	// Sky textures
+	Handle m_SkyTexture[5];
+
+	// Indices into m_SkyTexture
+	static const int IMG_FRONT = 0;
+	static const int IMG_BACK = 1;
+	static const int IMG_RIGHT = 2;
+	static const int IMG_LEFT = 3;
+	static const int IMG_TOP = 4;
+
+	// Array of image names (defined in SkyManager.cpp), in the order of the IMG_ id's
+	static const char* IMAGE_NAMES[5];
+
 	/// State of progressive loading (in # of loaded textures)
 	uint cur_loading_tex;
 };