Weather Alerts For San Juan, PR

# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT UNTIL 5 PM AST THIS AFTERNOON # SUMMARY -------------------- San Juan and Vicinity-Northeast-Southeast-Eastern Interior-North Central-Ponce and Vicinity-Northwest-Mayaguez and Vicinity- Southwest-Culebra-Vieques-St.Thomas...St. John...and Adjacent Islands-St Croix- Including the cities of Yabucoa, Aguada, Charlotte Amalie West, Juncos, Hormigueros, Guaynabo, Christiansted, Fajardo, Vega Alta, Vega Baja, Quebradillas, Caguas, Lajas, Toa Baja, Guayama, Catano, Rio Grande, Florida, Vieques, Rincon, Arecibo, Camuy, Yauco, Cruz Bay, Culebra, Anasco, Guayanilla, Loiza, San Juan, Gurabo, Carolina, Luquillo, Canovanas, Patillas, Hatillo, Isabela, Charlotte Amalie East, Ponce, San German, Grove Place, Aguas Buenas, Aguadilla, Anna's Retreat, Juana Diaz, Naguabo, Bayamon, Las Piedras, Mayaguez, Moca, San Lorenzo, Dorado, Manati, Cabo Rojo, Guanica, Humacao, Ceiba, Cidra, Comerio, Trujillo Alto, Charlotte Amalie, Penuelas, Frederiksted Southeast, Barceloneta, Maunabo, Arroyo, Santa Isabel, Cayey, Frederiksted, Toa Alta, and Salinas 1046 AM AST Mon Jun 22 2026 # DETAILS -------------------- WHAT This level of heat affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health system and in heat-sensitive industries. WHERE Portions of Puerto Rico and Virgin Islands. WHEN Until 5 PM AST this afternoon. IMPACTS Hot temperatures and high humidity may cause heat illnesses. ISSUED AT Monday, June 22, 2026 at 10:46 AM AST ISSUED BY National Weather Service San Juan PR HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Monitor the latest forecasts and warnings for updates.