Heat Advisory for San Juan and Vicinity, Northeast, Southeast Through 4 PM AST
The National Weather Service has issued a Heat Advisory for San Juan and Vicinity, Northeast, Southeast, and other areas in Puerto Rico and the Virgin Islands, effective from 10 AM to 4 PM AST on September 3, 2026.
3 reports on this incident · first at Sep 3, 2026, 2:07 a.m. ET
Earlier reports
Sep 3, 2026, 2:10 a.m. ET
Heat Advisory for San Juan and Vicinity, Northeast, Southeast: High Temperatures Could Worsen Chronic Conditions, NWS Warns
The National Weather Service in San Juan has issued a Heat Advisory for portions of Puerto Rico and the Virgin Islands, warning that high temperatures or elevated heat indices can worsen symptoms in people with chronic conditions and increase the risk of heat-related illness among individuals sensitive to heat with inadequate cooling or hydration. The advisory begins at 10 AM AST on September 3, 2026, and ends at 4 PM AST that afternoon. It covers 15 zones including San Juan and Vicinity, Northeast, Southeast, Eastern Interior, North Central, Central Interior, Ponce and Vicinity, Northwest, Western Interior, Mayaguez and Vicinity, Southwest, Culebra, Vieques, St. Thomas...St. John...and Adjacent Islands, and St Croix.
The advisory states that this level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Risks are highest across coastal areas, lowlands, interior valleys, and urban zones. The Weather Service recommends drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. It advises wearing lightweight and loose fitting clothing, limiting strenuous activities to early morning or evening, and taking action when seeing symptoms of heat exhaustion and heat stroke. For outdoor work, OSHA recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency; call 9 1 1.
Sep 3, 2026, 2:07 a.m. ETFirst report
Heat Advisory Issued for San Juan and Vicinity, Northeast, Southeast Through 4 PM AST
The National Weather Service in San Juan, Puerto Rico, has issued a Heat Advisory effective from 10:00 AM to 4:00 PM AST on September 3, 2026. The advisory covers portions of Puerto Rico and the Virgin Islands, including 15 zones such as San Juan and Vicinity, Northeast, Southeast, Eastern Interior, North Central, Central Interior, Ponce and Vicinity, Northwest, Western Interior, Mayaguez and Vicinity, Southwest, Culebra, Vieques, St. Thomas... St. John... and Adjacent Islands, and St. Croix. The advisory expires at 4:00 PM AST this afternoon.
According to the advisory, this level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. High temperatures or elevated heat indices can worsen symptoms in people with chronic conditions and increase the risk of heat-related illness among sensitive individuals with inadequate cooling or hydration. Risks are highest across coastal areas, lowlands, interior valleys, and urban zones.
Residents are advised to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check on relatives and neighbors. When outdoors, wear lightweight and loose-fitting clothing and limit strenuous activities to early morning or evening. The Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air-conditioned environments for outdoor work. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency; call 9-1-1.
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Revision history
- Version 13 Sept 2026, 06:10current
First published.
- Version 13 Sept 2026, 06:07current
First published.
- Version 13 Sept 2026, 06:23current
First published.
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