CHRISTIANSTED — Today St. Croix will be partly sunny with a thunderstorm in spots this morning followed by showers in the afternoon and a high of 91, AccuWeather said.
Tonight St. Croix will experience mainly clear conditions and a low of 78, according to AccuWeather.
Outlook on Tropical Weather Conditions at 8 AM 
Tropical Central Atlantic:
A tropical wave moving off the west coast of Africa is currently producing only limited rain activity, the National Weather Service said.
In a few days, environmental conditions are forecast to become favorable for the gradual development of this system, according to the NWS.
A tropical depression could form for the latter stretch of this week as it generally moves west-northwest across the Tropical Central Atlantic, the NWS said.
Saharan dust will bring hazy skies across the islands today, along with breezy E-SE winds, especially in coastal areas, the National Weather Service said.
“Be sure to secure any loose objects,” the NWS said on Facebook.
A Heat Advisory has been issued today for many parts of Puerto Rico, especially coastal and urban zones. 
Meanwhile, Weather conditions should gradually improve tonight, as the afternoon shower and thunderstorm activity dissipates and Saharan Dust particles depart from our region.
A Heat Advisory remains in effect for urban and coastal areas of Puerto Rico, with limited heat risk elsewhere, according to the NWS.
Isolated afternoon showers and thunderstorms are possible, with a limited to elevated flood risk over northwestern Puerto Rico, the NWS said.
