Heat Advisory Extended Through 5 PM AST Friday for San Juan, Northeast, Southeast, and Other Areas
The National Weather Service has extended the Heat Advisory for San Juan and Vicinity, Northeast, Southeast, and other areas until 5 PM AST on September 4.
4 reports on this incident · first at Sep 4, 2026, 2:06 a.m. ET
Earlier reports
Sep 4, 2026, 2:16 a.m. ET
Heat Advisory for San Juan and Vicinity, Northeast, Southeast from 10 AM to 5 PM AST September 4
The National Weather Service in San Juan has issued a Heat Advisory for September 4, 2026, from 10 AM to 5 PM AST. The advisory begins at 10 AM AST this morning and remains in effect until 5 PM AST this afternoon. It covers 15 zones across Puerto Rico and the Virgin Islands, 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.
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 those sensitive to heat with inadequate cooling or hydration. Risks are highest across coastal areas, lowlands, interior valleys, and urban zones.
Precautions recommended include drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. The advisory also 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 4, 2026, 2:11 a.m. ET
Heat Advisory for San Juan and Vicinity, Northeast, Southeast Through 5 PM AST Friday
The National Weather Service in San Juan has issued a Heat Advisory for Friday, September 4, 2026, from 10 AM to 5 PM AST, covering portions of Puerto Rico and the Virgin Islands, including San Juan and Vicinity, Northeast, and Southeast. The advisory warns 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. These risks are highest across coastal areas, lowlands, interior valleys, and urban zones.
The advisory affects 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. Cities listed include San Juan, Bayamon, Caguas, and Charlotte Amalie East and West.
The advisory expires at 5 PM AST this afternoon. The Weather Service advises drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. It recommends 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 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 4, 2026, 2:06 a.m. ETFirst report
Heat Advisory for San Juan and Vicinity, Northeast, Southeast Until 5 PM AST
The National Weather Service in San Juan, Puerto Rico, has issued a Heat Advisory for September 4, 2026, from 10 AM to 5 PM AST. 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 5 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 those with inadequate cooling or hydration. Risks are highest across coastal areas, lowlands, interior valleys, and urban zones.
The National 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 symptoms of heat exhaustion or heat stroke appear. For outdoor work, the Occupational Safety and Health Administration 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.
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- Version 14 Sept 2026, 06:20current
First published.
- Version 14 Sept 2026, 06:11current
First published.
- Version 14 Sept 2026, 06:06current
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- Version 14 Sept 2026, 06:16current
First published.
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