Dry in the morning, sticky by evening
Coastal air carries humidity almost all year. When fine dust lands on a blade or a metal chandelier arm, it absorbs that moisture and sticks. During dust-storm days the load on the ceiling is higher than on the floor, because warm air rises and leaves what it carries on the upper surfaces.
In homes where a lot of cooking happens, oil vapour reaches the ceiling and coats the blades with a thin greasy layer that grabs dust like glue. A dry cloth alone will not remove that layer.
Things that make dust stick harder
- Coastal humidity and condensation when the air conditioner runs
- Cooking vapour from an open kitchen nearby
- Salt in the air leaving a pale film on metal
- Running a fan for many hours in an unventilated room
- Incense smoke and oily air fresheners
