Extreme Heat Warning Issued for 11 Zones in Puerto Rico Through 5 PM AST September 6
The National Weather Service has issued an Extreme Heat Warning for September 6, 2026, from 10 AM to 5 PM AST across 11 zones in Puerto Rico, including San Juan and Vicinity, Northeast, and Southeast.
3 reports on this incident · first at Sep 6, 2026, 2:24 a.m. ET
Hazard products are revised and cancelled as conditions change. Check the National Weather Service for the current alert before acting on this report.
We last searched for new coverage of this at Sep 6, 2026, 2:38 a.m. ET — checked 39 min ago.
Earlier reports
Sep 6, 2026, 2:25 a.m. ET
Extreme Heat Warning for San Juan and Vicinity, Northeast, Southeast Until 5 PM AST
The National Weather Service in San Juan has issued an Extreme Heat Warning for September 6, from 10 AM to 5 PM AST, covering 11 zones across Puerto Rico, including San Juan and Vicinity, Northeast, Southeast, Eastern Interior, North Central, Central Interior, Ponce and Vicinity, Northwest, Western Interior, Mayaguez and Vicinity, and Southwest. The warning is in effect from 10 AM to 5 PM AST on September 6.
The Weather Service warns that this level of heat can affect anyone without effective cooling or adequate hydration, and that heat-related illnesses increase significantly during periods of very high heat indices. The impacts are expected to be most pronounced across coastal sections, lowlands, interior valleys, and urban areas, posing a severe threat to those without cooling or hydration.
Officials advise drinking plenty of fluids, staying in air-conditioned rooms, staying out of the sun, and checking on relatives and neighbors. They emphasize not leaving young children and pets in unattended vehicles, as car interiors can reach lethal temperatures in minutes. For outdoor work, OSHA recommends frequent rest breaks in shaded or air-conditioned environments. Anyone overcome by heat should be moved to a cool, shaded location, and heat stroke is an emergency requiring a call to 9 1 1.
Sep 6, 2026, 2:24 a.m. ETFirst report
Extreme Heat Warning Issued for San Juan and Vicinity, Northeast, and Southeast Puerto Rico
The National Weather Service in San Juan has issued an Extreme Heat Warning for September 6, 2026, from 10:00 AM to 5:00 PM AST. The warning covers 11 zones across Puerto Rico, including San Juan and Vicinity, Northeast, Southeast, Eastern Interior, North Central, Central Interior, Ponce and Vicinity, Northwest, Western Interior, Mayaguez and Vicinity, and Southwest. Affected cities include San Juan, Ponce, Mayaguez, and many others.
The warning states that this level of heat can affect anyone without effective cooling or adequate hydration. Impacts are expected to be most pronounced across coastal sections, lowlands, interior valleys, and urban areas. The National Weather Service advises drinking plenty of fluids, staying in air-conditioned rooms, staying out of the sun, and checking on relatives and neighbors. They also warn against leaving young children and pets in unattended vehicles, as car interiors can reach lethal temperatures in minutes.
For outdoor workers, 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 16 Sept 2026, 06:37
First published.
- Version 16 Sept 2026, 06:25current
First published.
- Version 16 Sept 2026, 06:24current
First published.
- Version 16 Sept 2026, 06:31current
First published.
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