Heat Advisory
HEAT ADVISORY REMAINS IN EFFECT UNTIL 5 PM AST THIS AFTERNOON
Puerto Rico heat advisories
1 heat advisory is in effect in Puerto Rico right now.
Hot and humid conditions will raise the heat index enough to cause heat illness for people without cooling.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
Map data: NWS, OpenFreeMap, OpenStreetMap
Active heat advisories in Puerto Rico
Heat Advisories in Puerto Rico by year
Puerto Rico averaged 39.2 heat advisories per year from 2016 to 2025, and has had 76 so far in 2026. The most recent was issued on November 14, 2026.
Counties with the most heat advisories
| County | 2016–2025 |
|---|---|
| Culebra Municipio | 198 |
| Vieques Municipio | 170 |
Recent heat advisories in Puerto Rico
| Issued | Alert | Area |
|---|---|---|
| Nov 14, 8:51 AM EST | Heat Advisory | San Juan and Vicinity; Northeast; Southeast; Eastern Interior; North Central; Central Interior; Ponce and Vicinity; Northwest; Western Inter |
What a heat advisory means
A heat advisory is issued when the heat index, which combines temperature and humidity, is expected to reach levels that can cause heat exhaustion or heat stroke. Thresholds vary across the country because people adapt to their local climate: offices in the Gulf Coast use higher values than those in the Northeast or Pacific Northwest.
More about heat advisories and the national map →
What to do
- Drink plenty of water and limit strenuous activity outdoors.
- Spend time in air conditioning; public libraries and cooling centers can help.
- Never leave children or pets in parked cars.
- Learn the signs of heat exhaustion and heat stroke.