For a more in-depth description of how these images are generated, see my blog post: Getting the latest global imagery.
This site is devoted to providing near real-time global mosaic images of the Earth in visible and infrared wavelengths. Images are provided by five geostationary satellites: GOES-16, GOES-18, Himawari-9, Meteosat-9, and Meteosat-10.
The latest raw image data are downloaded from the NOAA AWS buckets for the GOES-series and Himawari satellites, while the Eumetsat API, eumdac, is used to download the latest Meteosat data. I use Satpy to decode the data files into composite images.
True and natural color images are generated on the day side of the Earth, while on the night side an IR composite allows viewing of clouds and some landmasses. The visible/near-IR channels on GOES-16, GOES-18, and Himawari-9 are capable of generating true color images for the full disk, although green must be simulated for these because they lack a true "green" band. Unfortunately, although Meteosat-9 and 10 also have three visible channels and a near-IR channel, the required high-resolution visible (HRV) band does not cover the entire full disk, so we cannot generate a full true color image for Meteosat at this time.
More information about the images and instruments onboard these satellites can be found on the References page.
The GitHub repository for the code used to download and process the images can be found at www.github.com/jackcop/earth-now.
This site is unable to guarantee continuous service or image accuracy. As such, these images should not be relied on for critical meteorological information. Please consult your national meteorological agency for forecasting or emergency weather service.