July 4 Weather: Long Island Socked With Steamy Temps, Extreme Heat Warning

LONG ISLAND, NY — The July 4 holiday weekend has shaped up to be a scorcher.

An extreme heat warning remains in effect across Long Island until 9 p.m. on Saturday, the National Weather Service said.

Dangerously hot conditions with heat index values up to around 105 degrees are forecast to continue across Long Island, the NWS said.

An air quality alert is also in effect until 11 p.m. Saturday, the NWS said.

Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities, the NWS said.

An extreme heat warning means that the combination of heat and humidity is expected to make it feel like it is 105 degrees or greater.

Tips from the National Weather Service:

- Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening.

- Know the signs and symptoms of heat exhaustion and heat stroke.

- Wear lightweight and loose fitting clothing when possible, and drink plenty of water, the NWS said.

- Seniors and those with chronic health problems or mental health conditions are at an increased risk, the NWS said.

- Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don`t have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot, the NWS said.

- Check on vulnerable friends, family members and neighbors.

- To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location.

"Heat stroke is an emergency! In cases of heat stroke call 911," the NWS said.

Here's a look at the weather ahead for holiday weekend, according to the NWS:

Friday afternoon

Isolated showers and thunderstorms after 5 p.m. Sunny, with a high near 98 degrees. Heat index values as high as 106. Southwest wind around 8 mph. Chance of precipitation is 20 percent.

Friday night

Isolated showers and thunderstorms before 2 a.m. Partly cloudy, with a low around 76. West wind 3 to 6 mph. Chance of precipitation is 20 percent.

Independence Day

Scattered showers and thunderstorms after 2 p.m. Increasing clouds, with a high near 99. Heat index values as high as 109. Northwest wind 6 to 9 mph. Chance of precipitation is 30 percent.

Saturday night

Scattered showers and thunderstorms. Mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40 percent.

Sunday

A 30 percent chance of showers, mainly before 2 p.m. Partly sunny, with a high near 90. Northeast wind 5 to 8 mph.

Sunday night

Showers likely, mainly after 2 a.m. Mostly cloudy, with a low around 68. Chance of precipitation is 60 percent. New precipitation amounts between a tenth and quarter of an inch possible.

Monday

Showers likely, with thunderstorms also possible after 2 p.m. Mostly cloudy, with a high near 81. Chance of precipitation is 70 percent.

Monday night

Showers likely and possibly a thunderstorm before 8 p.m., then showers likely between 8 p.m. and 2 a.m., then showers and possibly a thunderstorm after 2 a.m. Low around 67. Chance of precipitation is 80 percent.

Tuesday

Showers and possibly a thunderstorm before 8 a.m., then a chance of showers between 8 a.m. and 2 p.m., then a chance of showers and thunderstorms after 2 p.m. High near 80. Chance of precipitation is 80 percent.

Tuesday night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30 percent.