Half-Life 2 Sky List

This is a list of skies available in the Steam caches, along with pictures of each skybox. The light_environment settings listed (Ideal Sun Angle, Ideal Brightness, etc) are suggestions based on settings used in official maps; other values may also be appropriate. To test skies in singleplayer without recompiling the map, bring up the console and enter sv_skyname <sky_name>. Quicksave the game, load it again and the old skybox should be temporarily replaced with the new one.

Note: If you are mapping for Half-life 2: Episode 2, you need to add _hdr to the end of most sky names (Excluding Episode 1 skies), if it is not already there so it does not cause the Sky Texture to stretch. (So, if your sky name was sky_day01_01, you would make it sky_day01_01_hdr').

These skyboxes are available to Half-Life 2 and all games and mods using the Source Engine. These skies are HDR capable if mapping for Half-Life 2: Episode 2.

The table below explains the prefixes used in map filenames.

Prefix	Location
d1_trainstation	City 17 before the teleporter accident
d1_canals	Route Kanal & Water Hazard
d1_eli	Black Mesa East
d1_town	Ravenholm
d2_coast	Highway 17
d2_prison	Nova Prospekt
d3_c17	City 17 after the Nova Prospekt explosion
d3_citadel, d3_breen	The Citadel

Only outdoor maps that have both skyboxes and light_environments are referenced by this list.

Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience
sky_borealis01
None	0 47 0	-45	254 227 167 80	195 195 195 20
sky_day01_01
d1_trainstation01 - d1_trainstation_06	0 165 0	-35	237 218 143 800	190 201 220 100
sky_day01_04
d1_canals_01, d1_canals_01a, d1_canals_02	0 165 0	-55	248 234 205 1000	194 236 252 175
Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience
sky_day01_05
d1_canals_03 d1_canals_05 d1_canals_06, d1_canals_07 d1_canals_08 de_prodigy	0 165 0 0 104 0 0 104 0 0 104 0 0 316 0	-83 -35 -35 -35 -70	243 224 158 1200 248 233 186 800 248 233 186 860 243 219 143 860 249 227 155 800	194 236 252 225 140 167 174 150 140 167 174 150 140 167 174 150 126 171 207 1000
sky_day01_06
d1_canals_09 - d1_canals_11 cs_compound	0 148 0 0 104 0	-35 -35	240 187 117 1000 248 233 186 860	135 172 180 150 140 167 174 150
sky_day01_07
d1_canals_12	0 108 0	-35	235 166 71 1000	135 172 180 150
Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience
sky_day01_08
d1_canals_13, d1_eli_01	0 108 0	-35	235 155 71 1000	105 142 165 120
sky_day01_09
d1_eli_02 d1_town_01 - d1_town_03	0 12 0 0 12 0	-45 -45	175 230 239 65 175 230 239 50	83 104 130 50 43 45 57 5
sky_day02_01
d1_town_05	0 225 0	-25	254 242 160 400	172 196 204 80
Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience
sky_day02_02
d2_coast_01 de_port	0 225 0 0 230 0	-20 -20	255 244 213 700 255 244 213 700	172 196 204 50 172 196 204 50
sky_day02_03
d2_coast_03 d2_coast_04	0 280 0 0 290 0	-45 -45	243 238 224 500 243 238 224 500	172 196 204 100 172 196 204 50
sky_day02_04
d2_coast_05	0 240 0	-45	243 238 224 400	172 196 204 50
Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience
sky_day02_05
d2_coast_08	0 135 0	-30	255 255 249 448	172 196 204 100
sky_day02_06
d2_coast_09	0 270 0	-20	255 252 230 475	172 196 204 120
sky_day02_07
d2_coast_10 d2_coast_11	0 225 0 0 225 0	-15 -15	255 252 230 500 255 0 0 400	183 204 210 140 175 199 205 150
Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience
sky_day02_09
d2_coast_12 d2_prison_01 d2_prison_02 - d2_prison_08	0 200 0 0 200 0 0 200 0	-5 -5 -5	237 232 209 70 217 226 234 0 221 232 240 20	122 140 169 60 122 140 169 20 103 143 184 125
sky_day02_10
d2_coast_07	0 135 0	-30	255 255 249 448	172 196 204 100
sky_day03_01
d3_c17_01 d3_c17_02 d3_c17_03	0 165 0 0 126 0 0 150 0	-35 -25 -30	237 218 143 800 245 200 150 1000 236 218 145 600	190 201 220 100 148 173 205 60 160 184 211 150
Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience
sky_day03_02
d3_c17_04 d3_c17_05	0 140 0 0 120 0	-35 -35	236 218 145 650 236 218 145 650	160 184 211 150 160 184 211 150
sky_day03_03
d3_c17_06a d3_c17_06b, d3_c17_07	0 120 0 0 115 0	-40 -35	236 218 145 700 236 218 145 700	160 184 211 150 160 184 211 150
sky_day03_04
d3_c17_08 d3_c17_09 d3_c17_10a, d3_c17_10b	0 53 0 0 50 0 0 50 0	-60 -35 -20	239 207 141 350 237 218 143 650 238 207 142 600	75 96 116 300 190 201 220 100 190 201 220 100
Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience
sky_day03_05
d3_c17_11 d3_c17_12 d3_c17_12b d3_c17_13, d3_citadel_01	0 82 0 0 82 0 0 40 0 0 82 0	-12 -8 -8 -12	238 200 128 450 238 200 128 450 239 207 141 350 238 200 128 450	75 96 116 150 75 96 116 150 75 96 116 300 75 96 116 250
sky_day03_06
d3_breen_01, d3_citadel_05	0 280 0	-21	221 112 13 300	255 255 255 20
sky_wasteland02
None	0 28 0	-35	255 255 249 524	172 196 204 100