# HEADLINE
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HEAT ADVISORY IN EFFECT FROM 10 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 Arroyo, Bayamon, Barceloneta, Toa Baja, Comerio, Ponce, Grove Place, Carolina, Salinas, Yabucoa, Frederiksted Southeast, Manati, Villalba, Penuelas, Las Marias, Maunabo, Jayuya, Hormigueros, Santa Isabel, Trujillo Alto, Camuy, Naguabo, Vega Alta, Juana Diaz, Luquillo, Charlotte Amalie West, Las Piedras, Vega Baja, Maricao, Frederiksted, Hatillo, Arecibo, Moca, Isabela, Lares, Barranquitas, Charlotte Amalie, Utuado, Patillas, Orocovis, Corozal, Humacao, Dorado, Sabana Grande, Quebradillas, Charlotte Amalie East, Culebra, Aguada, Ceiba, Guayanilla, Guaynabo, Adjuntas, Cruz Bay, Rincon, Cayey, Naranjito, Cabo Rojo, Christiansted, Gurabo, San German, Florida, Coamo, Anasco, Rio Grande, Aguadilla, Cidra, Aguas Buenas, Catano, Aibonito, Juncos, Loiza, Yauco, Anna's Retreat, San Sebastian, San Lorenzo, Canovanas, San Juan, Mayaguez, Guanica, Morovis, Fajardo, Vieques, Lajas, Caguas, Guayama, Toa Alta, and Ciales 251 AM AST Sun Oct 25 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 10 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
Sunday, October 25, 2026 at 2:51 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.