The first major heat wave of the season is bearing down on the Northeast, with four states bracing for dangerously high temperatures that could push past 100°F. The National Weather Service has issued a heat advisory for Massachusetts, New York, New Jersey, and Maine, warning that this multi-day hot spell is not to be taken lightly.
Starting Monday afternoon, thermometers are expected to climb to between 95 and 100 degrees across much of the region. The combination of heat and humidity will make it feel even hotter, with heat index values potentially reaching 99 degrees or more for two consecutive days.
Why This Heat Wave Is Different
According to the NWS, this is the first extended period of high temperatures many residents have faced this year. Bodies that haven't yet acclimated to summer heat are especially vulnerable, making dangerous heat wave precautions critical. The advisory emphasizes that "those not yet accustomed to hot temperatures with a moderate degree of humidity should take appropriate heat-related precautions."
Officials are urging everyone to drink plenty of fluids, stay in air-conditioned spaces, and avoid direct sun exposure. If you must go outside, wear lightweight, loose-fitting clothing and schedule strenuous activities for early morning or evening hours.
Know the Signs of Heat Exhaustion and Heat Stroke
Heat illness can strike quickly. Symptoms of heat exhaustion include heavy sweating, weakness, cold pale clammy skin, fast weak pulse, nausea, and fainting. Heat stroke is a medical emergency marked by high body temperature (103°F or higher), hot red dry or damp skin, fast strong pulse, confusion, and unconsciousness. If you see these signs, take action immediately.
The advisory also stresses the importance of checking on relatives, neighbors, and pets — especially seniors and those with chronic health or mental health conditions, who are at increased risk. Homes without air conditioning can become much hotter than outdoor temperatures, so it's vital to seek out cool spaces each day, even after the heat wave passes.
States Under the Heat Advisory
- Massachusetts
- New York
- New Jersey
- Maine
These states join others dealing with extreme weather this week. Earlier reports highlighted baseball-sized hail threats and air quality alerts in different parts of the country, underscoring a volatile weather pattern across the U.S.
How to Stay Safe
The NWS recommends using air conditioning at home or visiting public cooling centers. If you don't have AC, continue to seek cool spaces each day while the heat persists and for a few days after, because homes can retain heat. Stay hydrated with water, avoid alcoholic and caffeinated drinks, and never leave children or pets in parked cars — even for a minute.
With temperatures soaring into the dangerous 90s, this is a time to take the heat seriously. Stay cool, stay safe, and look out for one another.
