Active Weather Alerts
Extreme Heat Warning
Issued: 6:11 AM Sep. 11, 2026 – National Weather Service
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM THIS MORNING TO 5 PM AST THIS AFTERNOON... * WHAT...This level of heat can affect anyone without effective cooling and/or adequate hydration. * WHERE...Portions of Puerto Rico, particularly across coastal and urban areas and lower-elevation valleys. * WHEN...From 10 AM this morning to 5 PM AST this afternoon. * IMPACTS...Heat-related illnesses increase significantly during periods of very high heat indices or high temperatures. This extreme heat event poses a severe threat to anyone with inadequate cooling or hydration. These extreme impacts will be most pronounced across coastal sections, lowlands, interior valleys, and urban areas. * ADDITIONAL DETAILS...High concentrations of Saharan Dust will also be present today, resulting in hazy skies, reduced visibilities and deteriorated air quality. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Car interiors will reach lethal temperatures in a matter of minutes. 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. &&
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