| A suspension of fine dust and/or smoke particles in the air. Invisible to the naked eye, the particles reduce visibility by being sufficiently numerous to give the air an opalescent appearance. It is reported as HZ in an observation and on the METAR. |
| •owl:Thing |
| •SpatioTemporalThing |
| •Perdurant |
| •Event |
| •Phenomenon |
| •ObscurationPhenomenon |
| •Haze |