The dry and dusty air known as the Saharan Air Layer forms over the Sahara Desert in Africa and moves west across the Atlantic Ocean starting around April until about October, according to NOAA.

SAN JUAN, Puerto Rico — A massive cloud of dust from the Sahara Desert blanketed most of the Caribbean on Monday in the biggest event of its kind this year as it heads toward the United States ...

A colossal cloud of Sahara dust is smothering the Caribbean en route to the US The plume is expected to hit Florida, Louisiana, Alabama and Mississippi late this week and into the weekend. Credit: AP ...

The dry and dusty air known as the Saharan Air Layer forms over the Sahara Desert in Africa and moves west across the Atlantic Ocean starting around April until about October, according to NOAA.

A colossal cloud of Sahara dust is smothering the Caribbean en route to the US The plume is expected to hit Florida, Louisiana, Alabama and Mississippi late this week and into the weekend. Credit: AP ...

Cars drive along a highway as a cloud of dust from the Sahara Desert blankets most of the Caribbean, in Cataño, Puerto Rico, Monday, June 2, 2025.

Cars drive along a highway as a cloud of dust from the Sahara Desert blankets most of the Caribbean, in Cataño, Puerto Rico, Monday, June 2, 2025.

A colossal cloud of Sahara dust is smothering the Caribbean en route to the US The plume is expected to hit Florida, Louisiana, Alabama and Mississippi late this week and into the weekend. Credit: AP ...