ANNAPOLIS, Md. — Governor Wes Moore declared a State of Preparedness on June 23, 2025, to strengthen state coordination as Maryland braces for a severe heat wave. The National Weather Service forecasts dangerously high temperatures and humidity from Monday through Thursday, urging residents to take precautions to stay safe.
“Our top priority is the health and safety of Marylanders,” said Gov. Moore. “This State of Preparedness will ensure that Maryland is coordinated and poised to protect our people in anticipation of extreme heat and humidity. We ask that all Marylanders do their part to stay vigilant, stay hydrated, and stay in cool locations as much as possible. Check on vulnerable family members and friends throughout the week to make sure they’re staying safe too.”
The National Weather Service predicts daytime temperatures in the mid-90s across much of Maryland, with some areas potentially exceeding 100 degrees. Heat indices may range from 105 to 110, with a possible peak of 115. Overnight lows are expected to remain above 80 degrees, offering little relief. These conditions heighten the risk of heat-related illnesses, particularly for outdoor workers, children, seniors, and those with chronic health conditions.
The State of Preparedness enables rapid state response to heat-related challenges without declaring a full emergency. The Maryland Department of Emergency Management is tasked with coordinating preparations across state agencies to mitigate potential impacts. This proactive step ensures resources and response plans are in place to protect Marylanders.
“Many Marylanders are at risk for heat-related illness during extreme heat like we are experiencing this week,” said Maryland Department of Health Secretary Dr. Meena Seshamani. “Remember to check on those who are particularly vulnerable to this weather — including young children, senior citizens, and people with chronic diseases. Be sure that they have the resources they need to stay comfortable and safe, or help them locate one of the dozens of local cooling centers available.”
To stay safe, residents should avoid leaving infants, children, or pets in parked vehicles. Drink fluids proactively, even without thirst, and continue hydration after physical activity to prevent symptoms like headaches or fatigue. Avoid alcohol, caffeine, or sugary drinks, which can dehydrate, and steer clear of very cold beverages that may cause cramps. Limit outdoor activities from 11 a.m. to 3 p.m., when heat is most intense, and consume 16 to 32 ounces of water hourly if active. Some medications may increase heat risks, so consult a doctor if concerned.
Additional precautions include applying sunscreen with at least SPF 15, resting in shaded areas, and wearing lightweight, loose clothing, sunglasses, and wide-brimmed hats. Residents should locate cooling centers and note new Maryland regulations for hot work environments. For details, visit the Maryland Department of Emergency Management website. Cooling center locations are listed on the Maryland Department of Health website.
The heat wave threatens vulnerable groups, including those without air conditioning. Cooling centers provide critical relief, and state agencies are working to ensure accessibility. Maryland’s history of managing extreme weather events informs this response, with past heat waves highlighting the need for public education and resource allocation. The Department of Emergency Management will monitor conditions and collaborate with local governments to address emerging needs. Residents are encouraged to stay informed, check on neighbors, and follow safety guidelines to navigate this period of extreme heat safely.
