In a video on her Instagram, Lopez said she will source the money from her Las Vegas residency shows, reports theguardian.com.
She is co-chairing the New York state recovery effort, and announced her donation at a press conference on September 24 alongside New York governor Andrew Cuomo, who had just returned from the island.
They announced a scheme that encourages New York residents to donate goods, and aims to provide healthcare support.
Having already been battered by Hurricane Irma, on September 20 the island was hit by Hurricane Maria, the strongest storm to reach Puerto Rico in more than 80 years, with winds of 155mph and more than 20 inches of rain. It left the island's 3.5 million residents without power, a situation that could take months to rectify. The death toll currently stands at 10, but is expected to rise.
Offering India's condolences at the loss of lives in the devastating hurricanes, External Affairs Minister Sushma Swaraj said India stood "ready to assist in your efforts to rebuild broken lives".
"As a token of our solidarity, India will make available an emergency aid of $200,000 to the worst affected countries," Sushma Swaraj said in her opening address at the Third India-Caribbean Community (Caricom) Ministerial Meeting on the sidelines of the UN General Assembly here.
"I am asking our Mission to the UN to work with our partners in Antigua and Barbuda as well as Dominica and other partners to earmark an amount of $2 million from the India-UN Partnership Fund for South-South Cooperation for rehabilitation projects in Caricom," she stated. Caricom is an organisation of 15 Caribbean nations and dependencies.
Hurricanes Irma and Maria wreaked havoc across the Caribbean, North and Central America this month claiming scores of lives.
Sushma Swaraj said that India undertook evacuation from the island of Saint Maarten for not only Indians but for nationals of nine other countries as well.
At 11 p.m. (local time), Irma packed maximum sustained winds of up to 55 km per hour and was located 10 km south of Columbus, and 150 km south-southwest of Atlanta, both in the state of Georgia, reports Efe news.
The cyclone was moving at a speed of 24 km per hour towards the northwest, and it is expected to move into Alabama soon and then into western Tennessee by early Tuesday.
So Far, at least 30 people have died since Irma made landfall in the Caribbean Islands on September 6 and has recorded winds of up to 295 km per hour, which converted it into a powerful category 5 hurricane.
In the US, where it made landfall in Florida state on Sunday, has caused heavy flooding, left about 10 dead and about 6.5 million households without electricity.
People call these storms by other names, such as typhoons or cyclones, depending on where they occur, but the scientific term for all of these storms is "tropical cyclone", the scientists explained in a Tumblr blog this week.
Only tropical cyclones that form over the Atlantic Ocean or eastern and central Pacific Ocean are called "hurricanes."
Whatever they are called, tropical cyclones all form the same way. They are like giant engines that use warm, moist air as fuel.
"That is why they form only over warm ocean waters near the equator. This warm, moist air rises and condenses to form clouds and storms," the blog said.
As this warmer, moister air rises, there is less air left near the Earth's surface. Essentially, as this warm air rises, this causes an area of lower air pressure below.
This starts the 'engine' of the storm. To fill in the low pressure area, air from surrounding areas with higher air pressure pushes in.
That "new" air near the Earth's surface also gets heated by the warm ocean water so it also gets warmer and moister and then it rises.
As the warm air continues to rise, the surrounding air swirls in to take its place. The whole system of clouds and wind spins and grows, fed by the ocean's heat and water evaporating from the surface.
As the storm system rotates faster and faster, an eye forms in the centre.
Tropical cyclones usually weaken when they hit land, because they are no longer being "fed" by the energy from the warm ocean waters, the scientists explained.
However, when they move inland, they can drop many inches of rain, causing flooding as well as wind damage before they die out completely.
There are five types, or categories, of hurricanes. The scale of categories is called the Saffir-Simpson Hurricane Scale and they are based on wind speed.
To study hurricanes, NASA satellites gather information from space that are made into pictures.
Some satellite instruments measure cloud and ocean temperatures. Others measure the height of clouds and how fast rain is falling. Still others measure the speed and direction of winds.
NASA also flies airplanes into and above hurricanes. The instruments aboard planes gather details about the storm.
To study those parts which are too dangerous for people to fly into, NASA uses airplanes that operate without people, the blog said.
"There's still room for more," CNN quoted him as saying. He said that more shelters would be opened on Saturday.
"Protecting life is our top priority. No resource or expense will be spared to protect families," Scott added.
Meanwhile, Florida Power and Light (FPL) estimated that nearly 3.4 million of its customers could be without power at some point during Hurricane Irma.
If that comes to pass, it will be the largest number of outages they have ever had to deal with, FPL spokesman Chris McGrath told CNN.
"We think this could be the most challenging restoration in the history of the US," McGrath said.
The Governor said that 76,000 customers had already lost power.
Florida hurricane programme manager, Andrew Sussman said late Friday night that about 5.6 million Floridians have received the evacuation order due to the mortal threat that Irma poses, now a Category 4 hurricane and whose effects are expected to be felt statewide, reports Efe new.
"Not tonight. Not in an hour. Now," said state governor Rick Scott from the capital, Tallahassee, stressing on the urgency of people who have received an evacuation order to leave their homes and go to shelters.
On Thursday night, Scott ordered the shutdown of all state colleges and universities until next week in order to make them available as shelters from Irma's first effects, whose eye will reach South Florida on Sunday morning.
However, many shelters set up in Miami-Dade County and neighbouring Broward have closed their doors having reached their maximum capacity on Friday.
In Miami-Dade County itself an evacuation order has been issued for more than 650,000 people, the largest so far, as reported by local daily Miami Herald.
Between Thursday and Friday, the northern state highways have reported considerable traffic jams in what is already an unprecedented exodus of residents and tourists visiting South Florida.
Florida Power and Light Company (FPL), a leading provider of electricity in the state, has anticipated that at least 4.1 million clients will lose power as a result of the impact of Irma approaching Florida.
FPL forecast widespread damage in areas where it provides service in addition to significant impact on areas with more population and have already stationed 13,500 workers in the state, especially in South Florida, for rapid response to emergencies, the company said in a statement Friday.
In accordance with federal mandates, the firm has issued an Unusual Event statement to the US Nuclear Regulatory Commission to proceed with the gradual closure of the nuclear plants.
According to the National Hurricane Centre (NHC), projections indicate that Irma would pass more towards the western coast of the state, away from Miami which has the highest population density.
Currently, the hurricane made landfall in Cuba's Camaguey archipelago at 11 p.m. on Friday night.
At least 24 people were killed this week when Irma pummelled northern Caribbean islands such as Barbuda and the Virgin Islands.
When it had first made landfall on Wednesday morning, Irma sustained maximum wind speeds of at least 185 mph for at least 37 hours, longer than any storm on record.
The Red Cross estimates 1.2 million people have already been battered by the storm.