A heat warning is in effect from 10:00 AM to 5:00 PM for coastal and urban areas of Puerto Rico, with a heat index potentially reaching between 108 and 111 °F, according to the National Weather Service. Although the environment will be dry, a brief shower or isolated storm is possible in western Puerto Rico during the afternoon.
The day will be mostly sunny with some high clouds, and the wind will blow from the east to southeast. The Sahara dust will continue to affect the island, causing hazy skies and poor air quality. The temperature will reach a high of around 90 °F, with a heat index of up to 103 °F. On the night of July 14, isolated showers are expected between midnight and 3:00 AM, with a mostly clear sky and haze from the Sahara dust. The low temperature will be around 79 °F, with a 10% chance of rain.