Haze (HZ) is a reduction in visibility caused by tiny dry particles such as dust, salt, or pollutants suspended in the air. Unlike fog or mist, which are made up of water droplets and therefore highly sensitive to temperature changes, haze consists of dry particles that are less affected by temperature fluctuations. This means that haze can persist regardless of changes in temperature, maintaining a consistent reduction in visibility.

FOG, MIST, HAZE

• FOG. Cloud formed at or close to the surface. Visibility of less than 1000 m. Obscuring agent - very small water droplets. Relative humidity close to 100%.
• MIST. Visibility of 1000 m or more (up to 5000 m). Relative humidity greater than 95% with very small water droplets.
• HAZE. Visibility reduced by small solid particles (ie. Sand, dust, smoke). It is not reported if visibility is greater than 5000 m.