# HEADLINE
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EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 5 PM AST THIS AFTERNOON
# DETAILS
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WHAT
This level of heat can affect anyone without effective cooling and/or adequate hydration.
WHERE
Puerto Rico.
WHEN
Until 5 PM AST this afternoon.
IMPACTS
Heat-related illnesses increase significantly during periods of very high heat indices or high temperatures. This extreme heat event poses a severe threat to anyone with inadequate cooling or hydration. These extreme impacts will be most pronounced across coastal sections, lowlands, interior valleys, and urban areas.
ISSUED AT
Sunday, September 6, 2026 at 10:45 AM AST
ISSUED BY
National Weather Service San Juan PR
HEADER
URGENT - WEATHER MESSAGE
# PRECAUTIONARY/PREPAREDNESS ACTIONS
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
To reduce risk during 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.
# AREAS AFFECTED
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Central Interior, Eastern Interior, Mayaguez and Vicinity, North Central, Northeast, Northwest, Ponce and Vicinity, San Juan and Vicinity, Southeast, Southwest, Western Interior
Including the cities of Penuelas, Moca, Bayamon, Ceiba, Hatillo, Humacao, Caguas, Morovis, Comerio, Sabana Grande, Gurabo, Toa Alta, Maunabo, Vega Baja, Barranquitas, San Sebastian, Guayama, Arroyo, Manati, Aguas Buenas, Cabo Rojo, Villalba, Santa Isabel, Arecibo, Cayey, Fajardo, Las Piedras, Orocovis, Cidra, Aibonito, Ciales, Yauco, Guaynabo, Rincon, Jayuya, Florida, San Juan, Naguabo, Toa Baja, Ponce, Aguada, Patillas, Luquillo, Camuy, Adjuntas, Hormigueros, Quebradillas, Dorado, San Lorenzo, Carolina, Yabucoa, Barceloneta, Juncos, Naranjito, Aguadilla, Catano, Juana Diaz, Isabela, Lajas, Salinas, Trujillo Alto, Coamo, Maricao, Guayanilla, Rio Grande, Lares, Corozal, Mayaguez, San German, Loiza, Canovanas, Utuado, Anasco, Guanica, Vega Alta, and Las Marias