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NWS San Juan PRXH.W 0002July 30, 2026

Extreme Heat Warning: San Juan and Vicinity, Northeast, Southeast and 10 more, PR and VI

The National Weather Service office in San Juan issued an extreme heat warning for San Juan and Vicinity, Northeast, Southeast and 10 more in Puerto Rico, U.S. Virgin Islands, which was in force until 5:00 p.m. local time on July 30. It was the 2nd extreme heat warning the NWS office in San Juan issued in 2026. Puerto Rico had 2 extreme heat warnings in July 2026, against 1 in an average July of 2008-2025 (Puerto Rico's extreme heat warnings by year).

ExpiredWarning

Issued2:35 a.m. EDT, July 30, 2026
In force from9:00 a.m. EDT, July 30, 2026
Expired5:00 p.m. EDT, July 30, 2026

In force for 8 hours; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, San Juan PR
Area
San Juan and Vicinity, Northeast, Southeast and 10 more
State
Puerto Rico
Level
Warning
Issued
2:35 a.m. EDT, July 30, 2026
In force from
9:00 a.m. EDT, July 30, 2026
Expires
5:00 p.m. EDT, July 30, 2026
CAP severity, certainty, urgency
Severe, Likely, Expected
VTEC event
TJSJ XH.W 0002
Official source
National Weather Service: the notice at its source

Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The notice as issued

* WHAT...Dangerously hot conditions. 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 5 PM AST this afternoon. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

What the agency told people to do

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. Stay cool, stay hydrated, stay informed.

Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.