The intensities of the collision-induced absorption (CIA) bands associated with the electric-dipole forbidden O₂ fundamental and the CO₂ν₁/2ν₂ Fermi dyad monomer vibrational bands have been studied over the temperature range 193–360 K and the frequency range 1100–2000 cm⁻¹. As CO₂ is added to a pure O₂ sample, the intensity in the O₂ fundamental band region increases dramatically. At the lowest temperature studied, 193 K, the band-integrated CIA coefficient for enhancement of the Fermi dyad absorption from CO₂ to CO₂ collisions, S_CO2–CO2, is more than a factor of two larger than the band-integrated CIA coefficient for enhancement of the O₂ vibrational fundamental by CO₂ collisions, S_O2–CO2. Moreover, the S_CO2–CO2 coefficient shows a significantly larger temperature dependence, increasing by more than a factor of two from 345.6 to 193 K while S_O2–CO2 increases by less than one third. The band shapes and their temperature dependence provide clear evidence for the formation of CO₂–CO₂ and CO₂–O₂ complexes. The CO₂–CO₂ dimer feature is most striking, contributing significantly to the infrared absorption near the expected CO₂ monomer fundamentals. Evidence for the more weakly bound CO₂–O₂ complex is seen on the O₂ CIA band, particularly at the lowest temperatures studied. The shapes for both dimer bands display sharp a-type Q branch central profiles and broad P and R branch like structure attributed to b-type Q branches for the CO₂–CO₂ complex and a-type P and R branch structure for the CO₂–O₂ complex. The present results stress the importance of including bound and metastable dimer absorption in any theoretical modeling of CIA, particularly when one of the collision partners has a large electrostatic moment, such as CO₂ with its large electric quadrupole moment.