Among NASA’s A-Train roster of satellite platforms there are two carrying instruments which measure trace gases appropriate for air quality studies and monitoring: Aqua and Aura. Among the most useful instruments on-board these two platforms are AIRS, OMI, and TES.
Levy, R., S. Mattoo, L.A. Munchak, L.A. Remer, A.M. Sayer, Patadia, F., and N. Hsu (2013). The Collection 6 MODIS Aerosol Products over Land and Ocean Atmos. Meas. Tech, 6, 2989-3034