# HEADLINE
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HEAT ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 5 PM AST THIS AFTERNOON
# SUMMARY
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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-St Croix- Including the cities of Ponce, Lares, Carolina, Corozal, Gurabo, Yauco, Culebra, Frederiksted Southeast, Adjuntas, Fajardo, Penuelas, Aguadilla, Luquillo, Jayuya, Grove Place, Comerio, Barranquitas, Lajas, Santa Isabel, Villalba, Moca, Rincon, Camuy, Naranjito, Las Marias, Anasco, Cruz Bay, Guayanilla, Maricao, Hatillo, Morovis, Dorado, Salinas, Christiansted, Vega Baja, San Lorenzo, Vieques, Utuado, Canovanas, Guaynabo, Juncos, Barceloneta, Ceiba, Loiza, Humacao, Catano, Guayama, Charlotte Amalie East, Charlotte Amalie, Cayey, Toa Alta, Arecibo, Trujillo Alto, Anna's Retreat, Cidra, Coamo, Aguas Buenas, Aguada, Las Piedras, Yabucoa, Ciales, Juana Diaz, Toa Baja, Charlotte Amalie West, Caguas, San German, Naguabo, Frederiksted, Arroyo, San Sebastian, Orocovis, Cabo Rojo, Patillas, Guanica, Vega Alta, Isabela, Rio Grande, Bayamon, Aibonito, Florida, Manati, Hormigueros, Mayaguez, Quebradillas, Sabana Grande, Maunabo, and San Juan 156 AM AST Mon Oct 26 2026
# DETAILS
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WHAT
This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration.
WHERE
Portions of Puerto Rico and Virgin Islands.
WHEN
From 9 AM this morning to 5 PM AST this afternoon.
IMPACTS
High temperatures or elevated heat indices can worsen symptoms in people with chronic conditions. They can also 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.
ISSUED AT
Monday, October 26, 2026 at 1:56 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.
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.