Puerto Rico, U.S. Virgin Islands Moderate Heat Advisory | Effective 08/26/2026 22:12

Headline: 
Heat Advisory issued August 27 at 1:12AM AST until August 27 at 5:00PM AST by NWS San Juan PR
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
August 26, 2026 - 10:12pm
Expires: 
August 27, 2026 - 6:15am
Description: 
* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. expected. * WHERE...Portions of Puerto Rico and Virgin Islands. * WHEN...From 10 AM this morning to 5 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Instruction: 
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. Monitor the latest forecasts and warnings for updates.
Area Description: 
San Juan and Vicinity; Northeast; Southeast; North Central; Ponce and Vicinity; Northwest; 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