The best replacement for fog is mist.

The best alternatives to fog are rated as following:
★★★★★  mist
★★★★  haze
★★★  clonezilla
★★  driving lights
★★  smog
★★  clouds
★★  cloud
★  haze machine
★  frost chico
★  stream
★  wds
★  stream pepper spray
★  frost
★  aws-sdk
  smooth bore
  mdt
  mist definition
  clonezilla server
  marine layer
  skullcrack
  samsonite
  chicken lips
  maybe just a mist
  dew
  mist meaning
  salt spray

Your alternative for fog is not listed? Suggest!
Speaking about fog, one probably shouldn't forget about dew.

Other search terms related to fog and their ratings are:
★★★★★ dew
You have in mind a companion for fog and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of fog in all years. Click on graph for more.
fog
mist
haze