Hello how may I help you? Hello. I would like to find out some information Sure, what is it you would like to know? Can you tell me what the biggest cloud on record is? Do you mean widest, tallest, or heaviest? both wide and tall - largest as in size Do you mean Stratus, Cirrus, or Cumulus? Any cloud. The largest could anyone has ever recorded The largest cloud every recorded is the Gigantic Stratus with a width of 2500 feet and a height of 5000 feet That's impressive. Thank you Anything else I can help you with today? That will be all. Thanks again