Puerto Rico, U.S. Virgin Islands Moderate Heat Advisory | Effective 09/25/2026 22:52

Headline: 
Heat Advisory issued September 26 at 1:52AM AST until September 26 at 4:00PM AST by NWS San Juan PR
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
September 25, 2026 - 10:52pm
Expires: 
September 26, 2026 - 7:00am
Description: 
* 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 4 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.
Instruction: 
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.
Area Description: 
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
Forcast Office: 
NWS San Juan PR
Sender: 
w-nws.webmaster@noaa.gov