This article presents a full-sky 100 μm map that combines COBE/DIRBE and IRAS/ISSA data, removing zodiacal foreground and confirmed point sources. The authors construct a dust temperature map using DIRBE 100 and 240 μm data to convert the 100 μm map into a map proportional to dust column density. The dust temperature ranges from 17 to 21 K, affecting the dust column estimate by a factor of 5. The final map has DIRBE-quality calibration and IRAS resolution, revealing filamentary details at various scales across all Galactic latitudes. High-latitude regions correlate well with H I emission maps, while deviations are coherent and prominent in regions of H I saturation or H2 formation. High-velocity H I clouds show reduced dust emission. The authors remove zodiacal light contamination and cosmic infrared background (CIB) artifacts, with no significant CIB detected at 100 μm but detectable at 140 and 240 μm. The maps are used to estimate Galactic extinction, with the new maps being twice as accurate as older Burstein-Heiles estimates in low to moderate reddening regions. The maps also aid in estimating millimeter emission and soft X-ray absorption. The article details the processing of DIRBE data, zodiacal light removal, and the combination of DIRBE and IRAS data, providing a comprehensive resource for astrophysical research.This article presents a full-sky 100 μm map that combines COBE/DIRBE and IRAS/ISSA data, removing zodiacal foreground and confirmed point sources. The authors construct a dust temperature map using DIRBE 100 and 240 μm data to convert the 100 μm map into a map proportional to dust column density. The dust temperature ranges from 17 to 21 K, affecting the dust column estimate by a factor of 5. The final map has DIRBE-quality calibration and IRAS resolution, revealing filamentary details at various scales across all Galactic latitudes. High-latitude regions correlate well with H I emission maps, while deviations are coherent and prominent in regions of H I saturation or H2 formation. High-velocity H I clouds show reduced dust emission. The authors remove zodiacal light contamination and cosmic infrared background (CIB) artifacts, with no significant CIB detected at 100 μm but detectable at 140 and 240 μm. The maps are used to estimate Galactic extinction, with the new maps being twice as accurate as older Burstein-Heiles estimates in low to moderate reddening regions. The maps also aid in estimating millimeter emission and soft X-ray absorption. The article details the processing of DIRBE data, zodiacal light removal, and the combination of DIRBE and IRAS data, providing a comprehensive resource for astrophysical research.