Public Health Advisory: Saharan Dust Cloud Alert
The Ministry of Health, Environment and Sustainability (MHES) and the Public Health Department (PHD) are advising residents to take precautions to protect themselves from the effects of Saharan dust. The Cayman Islands National Weather Service (CINWS) has issued a Dust Alert in effect from Friday 11 September through Monday 14 September 2026.
Saharan dust is a mixture of dust and sand that travels thousands of miles from the Sahara Desert to the Caribbean each year. These events can reduce air quality and affect respiratory health, particularly among vulnerable individuals. Symptoms associated with exposure may include coughing, wheezing, sore throat and shortness of breath.
Dust conditions are monitored by CINWS using atmospheric measurements, including Aerosol Optical Depth (AOD) and Dust Extinction (DuEx). These measurements help indicate the concentration of airborne particles and the potential impact on air quality.
The Cayman Islands National Weather Service forecast that light dust concentrations are expected to reach the Cayman Islands by midday Saturday 12 September. Dust levels will increase through the weekend, with the highest concentrations expected on Sunday. The CINWS is predicting moderate concentrations at peak dust levels.
As a result of the alert, MHES and PHD are issuing the following public health guidance:
General public
• Limit time outdoors, particularly during periods of high dust concentration.
• Keep doors and windows closed to reduce dust entering homes and buildings.
• Use air conditioners on recirculation mode or air purifiers, if available.
• Wear long-sleeved clothing and protect eyes from irritation.
• Wash hands regularly and avoid touching eyes.
• Monitor for new or worsening symptoms and seek medical advice if necessary.
Persons with asthma, COPD or other respiratory or heart conditions
• Remain indoors where possible and use air conditioning on recirculation mode.
• Ensure reliever inhalers and medications are readily available.
• Consider wearing a well-fitting face mask when outdoors if exposure cannot be avoided.
• Contact a healthcare provider if symptoms worsen.
Schools and workplaces
• Limit outdoor activities, including sports and prolonged breaks.
• Keep windows closed where practical.
• Inform parents and caregivers of measures being taken to protect vulnerable children.
MHES and PHD will continue to work closely with CINWS to monitor conditions and provide updates as necessary. Residents are encouraged to follow official government channels for the latest information.
Persons requiring additional guidance may contact the Public Health Department on 244-2889 or 244-2621.
