Extreme Heat Warning Issued for Puerto Rico Regions
This alert is no longer in effect.
NOAA issued it on August 26, 2026, 4 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 issues Extreme Heat Warning for multiple Puerto Rico areas from 9 AM to 5 PM AST due to dangerously hot conditions.
Read this weather record in 30 seconds
- Record type
- Extreme Heat Warning
- Affected area
- Puerto Rico
- Issued
- August 26, 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 4 days ago; use the issuing agency's live warning service for current conditions in Puerto Rico.
Alert Details
Extreme Heat Warning issued by NWS San Juan PR. Effective from August 26 at 12:56 AM AST, with onset at 9 AM AST and ending at 5 PM AST.
Affected Areas
San Juan and Vicinity; Northeast; Southeast; Eastern Interior; North Central; Ponce and Vicinity; Northwest; Mayaguez and Vicinity; Southwest.
What You Should Do
Do not leave young children and pets in unattended vehicles. Schedule frequent rest breaks in shaded or air conditioned environments during outdoor work. Move anyone overcome by heat to a cool and shaded location. Call 911 for heat stroke emergencies. Stay cool, stay hydrated, stay informed.
Expected Conditions
Dangerously hot conditions expected, with heat related illnesses increasing significantly during extreme heat and high humidity events.
Timeline
Alert effective August 26 from 9 AM AST to 5 PM AST.
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 (857 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 26, 2026.
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Common questions about this NWS weather alert.