June 26, 2025

Tips for Dangerously Hot Weather

Tips for Summer’s First Heat Wave

Since Monday, Montgomery County and the entire Washington metropolitan region have felt the blistering heat of the summer’s first heat wave. Afternoon air temperatures climbed close to 100 degrees and overnight low temperatures remained in the upper 70s to near 80.

Extreme heat affects the body's ability to regulate temperature, which can create dangerous conditions if appropriate safety measures are not taken. Heat may affect air quality, especially in urban areas, and may have a stronger impact on the elderly, children and sick persons.

Symptoms of heat-related illnesses may include painful muscle spasms or cramps, pale or flushed skin that may be damp or cool, dizziness, nausea, headache and weakness in the early stages. In extreme cases, red, hot, dry skin, weak pulse, rapid breathing and changes in consciousness can occur, in which case residents should seek medical attention immediately by calling 911.

County facilities, including libraries, swimming pools, recreation centers and senior centers are places to cool off during normal operating hours. Note that hours are more limited on Sundays, so check the department’s websites for more information. Public locations such as indoor malls and movie theaters could also be utilized. Before attending outdoor events, check with organizers as some may be cancelled or changed due to the extreme heat.
 
The following precautions may help residents remain safe and comfortable during excessive heat days:
  • Stay indoors, whenever possible. Keep blinds or curtains closed to keep the inside cooler.
  • Keep in mind: Electric fans may provide comfort, but when the temperature is in the high 90s, they may not prevent heat-related illness. Taking a cool shower or bath or moving to an air-conditioned place is a better way to cool off. Use the stove and oven less to maintain a cooler temperature.
  • Avoid strenuous activities that can result in overexposure to the sun, such as sports and gardening. If you must do a strenuous activity, do it during the coolest part of the day, which is usually in the morning before 9 a.m.
  • If you’re spending time outdoors, take frequent breaks in a cool, shaded location.
  • Drink plenty of water. Dehydration, cramps, exhaustion or heat stroke can result from not drinking enough fluids. Water is the safest liquid to drink.
  • Avoid alcohol or caffeine.
  • When outdoors, wear proper protection from the sun. Light-colored clothing, a hat, sunglasses and sunscreen are strongly recommended.
Sign up for the County's Alert Montgomery notification system to receive emergency alerts regarding weather and other emergency information. The Alert Montgomery System provides accurate and immediate emergency notifications from Montgomery County to your cell, work, or home phones via text, email, or voice message to receive notifications about emergencies that may affect your home, workplace, child's school, or any other locations within the County.

For general information about County programs and services, call 311. Information on hot weather safety tips is available on the Heat Emergency webpage.