🌡️
Heat Advisory
◍ San Juan and Vicinity · USA · updated 11/4/2026, 5:59:00 AM
⏱ In effect until 10:00 AM UTC-4
Severity score
65/100
Confidence
High
Why this matters
* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. * WHERE...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-re
Key stats
Severity
Moderate
Certainty
Likely
Urgency
Expected
Severity over time
Timeline
- Heat Advisory11/4/2026, 5:59:00 AMHeat Advisory issued November 4 at 1:59AM AST until November 4 at 5:00PM AST by NWS San Juan PR
Sources & attribution
OfficialNWS NWS San Juan PRupdated 11/4/2026, 5:59:00 AM
⚠This is an informational severity score, not an official warning. Follow guidance from NWS/NOAA, FEMA (ready.gov), and local emergency management.