| Criteria | Mist | Fog | Remarks |
| Definition | Suspension of tiny water droplets in the air near the ground | Denser suspension of water droplets close to the ground | Both are formed by condensation, but differ in density and visibility |
| Visibility | Visibility usually greater than 1 kilometer | Visibility less than 1 kilometer | Visibility threshold is the key distinguishing factor |
| Droplet Size | Slightly smaller water droplets | Slightly larger water droplets | Size difference is subtle but contributes to optical density |
| Formation Conditions | Occurs when warm, moist air meets cooler air | Forms under similar conditions but with greater saturation | Often occurs during early morning or after rainfall |
| Duration and Spread | Typically short-lived and localized | Can persist longer and cover larger areas | Fog tends to be more persistent than mist |
| Impact on Transportation | Minor inconvenience in most cases | Major hazard to air and road transport | Fog is a serious concern for aviation and driving safety |
| Occurrence | More common in slightly humid conditions | Occurs more frequently in high humidity and low wind | Geography and weather conditions influence occurrence |
