| Small particles produced by combustion that are suspended in the air. A transition to haze may occur when the smoke particles have traveled great distance (25 to 100 miles or more), and when the larger particles have settled out. The remaining particles become widely scattered through the atmosphere. It is reported as FU in an observation and on the METAR. |
| •owl:Thing |
| •SpatioTemporalThing |
| •Endurant |
| •PhysicalEndurant |
| •AmountOfMatter |
| •Substance |
| •ParticulateSubstance |
| •SuspendedSubstance |
| •Smoke |
| •Perdurant |
| •Event |
| •Phenomenon |
| •ObscurationPhenomenon |
| •Smoke |