Extreme Heat Warning Issued for Puerto Rico Until 5 PM AST
This alert is no longer in effect.
NOAA issued it on August 25, 2026, 3 days ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS San Juan PR has issued an Extreme Heat Warning for multiple regions of Puerto Rico effective until 5 PM AST today.
Read this weather record in 30 seconds
- Record type
- Extreme Heat Warning
- Affected area
- Puerto Rico
- Issued
- August 25, 2026
- Issuing authority
- NWS San Juan PR
Heat notices are time-bound and location-specific. Confirm the current forecast and local public-health guidance before relying on this archived record.
Record status: historical. It was issued 3 days ago; use the issuing agency's live warning service for current conditions in Puerto Rico.
Alert Details
An Extreme Heat Warning has been issued by the National Weather Service San Juan PR. The alert is effective from August 25 at 8:07 AM AST until August 25 at 5:00 PM AST.
Affected Areas
The warning covers San Juan and Vicinity, Northeast, Southeast, Eastern Interior, North Central, Ponce and Vicinity, Northwest, Mayaguez and Vicinity, and Southwest.
What You Should Do
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. 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.
Expected Conditions
Dangerously hot conditions are expected, with this level of heat affecting most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Heat related illnesses increase significantly during extreme heat and high humidity events.
Timeline
The alert is in effect until 5 PM AST on August 25, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,157 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 25, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.