The Trinidad and Tobago Meteorological Service warned of yet another wave of Saharan Dust which may affect vulnerable groups or people with sinus complications.
In a social media post on Sunday, the Met Office said the dust will linger until mid-week.
"Please be advised, an increase in the concentration of Saharan dust is expected between today and tomorrow and the dust is expected to linger until mid-week, just before an expected showery spell. #ttmetservice #TrinidadandTobago #Saharandust"
What is Saharan Dust?
Saharan dust is composed of sand and other mineral particles that are swept up in air currents and pushed over the Atlantic Ocean to the Gulf of Mexico and other nearby regions.
As the dust-laden air moves, it creates a temperature inversion which in turn tends to prevent cloud -- and eventually -- storm formation.
It means fewer storms and even hurricanes are less likely to strike when the dust is present.
Normally, hundreds of millions of tons of dust are picked up from the deserts of Africa and blown across the Atlantic Ocean each year.
That dust helps build beaches in the Caribbean and fertilizes soils in the Amazon. It affects air quality in North and South America.