Two sky brightness monitors—one for the near‐infrared and one for the mid‐infrared—have been developed for site survey work in Antarctica. The instruments, which we refer to as the NISM (Near‐Infrared Sky Monitor) and the MISM (Mid‐Infrared Sky Monitor), are part of a suite of instruments being deployed in the Automated Astrophysical Site‐Testing Observatory (AASTO). The chief design constraints include reliable, autonomous operation, low power consumption, and of course the ability to operate under conditions of extreme cold. The instruments are currently operational at the Amundsen‐Scott South Pole Station, prior to deployment at remote, unattended sites on the high antarctic plateau.