https://worldview.earthdata.nasa.gov/?l ... _TrueColor
It also depends on which level of data (Levels 1 - 4) you are interested in looking at. For Level 3 data, you can use Panoply to visualize. You can download the Panoply desktop software here: https://www.giss.nasa.gov/tools/panoply/. You can download the .nc (netcdf) file you are interested in looking at, to your local computer, and then use Panoply to open the file.
For Level 2 data, the ASDC DAAC stores a .jpg image of daily Level 2 swaths of Carbon Monoxide (CO), at different heights/pressure levels in the atmosphere. An example can be found here: https://asdc.larc.nasa.gov/data/MOPITT/ ... 020.01.30/