The National Meteorological Service (SNM) in San Juan has issued a heat alert for 61 of Puerto Rico's 78 municipalities, effective from 10:00 a.m. to 5:00 p.m. on Saturday. The alert warns of 'dangerous heat and poor air quality' due to the Sahara dust and high temperatures, which may cause heat-related illnesses. The affected municipalities include major cities such as San Juan, Ponce, and Mayagüez.
dangerous heat and poor air quality
The SNM advises people to stay hydrated, limit outdoor activities, and seek shade. The heat index is expected to reach between 100 and 111 degrees Fahrenheit. The Sahara dust is also expected to affect air quality, reducing visibility and increasing the risk of respiratory problems.
The dust concentrations may decrease briefly on Sunday but are expected to increase again afterwards. The SNM also reports moderate marine currents in the northern and southeastern coastal areas of Puerto Rico.