San Juan, Puerto Rico
Regional Weather Alerts
| Alert: | Heat Advisory |
| Area(s): | 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 |
| Effective: | 2026-10-04 @ 1:25 am -> 2026-10-04 @ 3:00 pm |
| Onset: | 2026-10-04 @ 9:00 am -> 2026-10-04 @ 3:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Juan PR on 2026-10-04 @ 1:25 am |
| Headline: | Heat Advisory issued October 4 at 2:25AM AST until October 4 at 4:00PM AST by NWS San Juan PR |
| Description: |
* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. * WHERE...Puerto Rico and U.S. Virgin Islands. * WHEN...From 10 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. |