A heat advisory is in effect across the region until 9 p.m., with heat index values expected to reach the upper 90s in Riverhead Sunday.
The highest heat indices will occur this afternoon and evening, the National Weather Service said in a special statement.
An air quality advisory is also in effect today for the pollutant ozone, which will make air unhealthy on Long Island and in the New York City metro region. The air quality index is forecast to be 151 today.
Health officials urge caution for all outdoor activities and limiting strenuous outdoor activities today, especially in the afternoon and evening when ozone levels peak.
High levels of ozone, the pollutant that causes smog, can irritate airways and lungs and can be especially dangerous for young children and people with respiratory disease. People experiencing shortness of breath, chest pain and coughing should consider seeking medical attention.
All town beaches with lifeguards will remain staffed and open today until 7 p.m.
Protection from ultraviolet radiation is essential on a day like today, when the UV index is high — a 9 on a scale of 11. The federal Environmental Protection Agency says if you need to be outside during midday hours — 10 a.m. to 4 p.m. — take steps to reduce sun exposure with clothing, including a hat, and sunscreen.
Beachgoers should know that white sand and other bright surfaces reflect UV and can double UV exposure, the EPA said.
Extreme heat can cause illness and death among at-risk populations who cannot stay cool, according to the National Weather Service. The heat and humidity may cause heat stress during outdoor exertion or extended exposure.
“Keep a close eye on the elderly and young children,” Riverhead Town Police said in a weather advisory issued yesterday.
“Also, make sure your pets have shade and water,” police said.
The Suffolk Society for the Prevention of Cruelty to Animals issued a statement urging pet owners to take extra care of their animals during times of high heat an humidity.
Don’t let your dog stand on hot asphalt, his body can heat up quickly and his sensitive paw pads can easily burn.
Never trim your pet’s coat to the skin, which can rob your dog of his protection from the sun.
Always provide plenty of shade and cool, clean water for animals kept outdoors.
A properly constructed doghouse is a must if you dog lives outdoors.
Bring your cat or dog inside during the hottest part of the day.
When traveling with your pet during hot weather, make it a habit to carry a gallon-size thermos of water. Consider freezing the water for long trips.
Never leave your animal alone in a vehicle. Overheating can be fatal. Even with the windows open, a parked automobile can quickly become a furnace.
In case of an emergency dial 911 or call the Riverhead Police Department at 631-727-4500.
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