Preparedness guide

Heat Wave Preparedness

Heat waves can make indoor and outdoor conditions uncomfortable or unsafe, especially when cooling is limited. A steady plan focuses on cooling options, hydration habits, check-ins, pets, and public health guidance.

Start with these 3 steps

  1. Make a cooling plan.
  2. Schedule check-ins.
  3. Follow health guidance.

Overview

What this means

A heat wave is a period of unusually hot weather that can strain households, buildings, pets, transportation, work routines, and power systems. Indoor heat can build up even after the sun goes down, especially in apartments, upper floors, poorly shaded rooms, or homes without reliable cooling. Preparedness means planning cooler places, adjusting activity timing, drinking fluids in a general routine, checking on others, and following local public health guidance.

Who may be affected

  • People without reliable cooling
  • Older adults living alone
  • Families with infants or young children
  • Outdoor workers
  • People with health concerns
  • Pet owners
  • Residents on upper floors
  • People using public transit

Common misunderstandings

  • Heat is only a daytime problem
  • Fans always solve indoor heat
  • Only outdoor workers need a plan
  • Pets handle heat like people do
  • Hydration can wait until thirst
  • Cooling centers are only for emergencies

Before

Prepare before

Create a cooling plan

A cooling plan identifies where your household can spend time if home becomes too hot. Options may include shaded rooms, public cooling centers, libraries, community centers, malls, relatives, neighbors, or other public places. Do not assume everyone can simply leave; include transportation, accessibility, pets, work schedules, and building rules in the plan.

  • Identify cooler rooms or public cooling locations.
  • Check local cooling center information before heat arrives.
  • Plan transportation that does not assume a car.
  • Know building contacts for cooling or ventilation concerns.

Plan hydration and meals

General hydration routines help households avoid waiting until everyone feels overheated or thirsty. Keep drinking water accessible and plan simple meals that do not add much indoor heat. People with medical conditions, fluid restrictions, or medication questions should follow advice from medical professionals or local public health guidance.

  • Keep water easy to reach throughout the day.
  • Plan simple meals that limit stove or oven use.
  • Use personal medical advice for fluid questions.
  • Pack water when leaving home.

Schedule check-ins

Heat can be harder on people who live alone, have limited mobility, lack reliable cooling, or may not notice symptoms early. Arrange simple check-ins before hot weather arrives. A check-in can be a call, text, door knock when safe, or help finding public cooling information. Keep the plan respectful and practical.

  • Make a list of people to check on.
  • Set times for calls or texts.
  • Share local cooling resource information.
  • Ask how they prefer to be contacted.

Prepare for pets and indoor heat

Pets need cool spaces, water, shade, and adjusted routines during heat. Indoor temperatures can rise quickly when cooling fails or sunlight hits certain rooms. Plan where pets can stay safely, when walks can be shorter or earlier, and who could help if you need to relocate. Never leave pets in dangerously hot enclosed spaces.

  • Keep pet water bowls filled and accessible.
  • Plan walks for cooler parts of the day.
  • Identify pet-friendly cooling options if possible.
  • Keep pets out of hot enclosed spaces.

During

During the event

Follow public health guidance

During a heat wave, use local public health officials, weather offices, and emergency management sources for heat alerts, cooling resources, and protective guidance. Avoid relying on informal advice for personal health decisions. If someone shows signs of urgent danger, call emergency services. For personal medical concerns, contact a medical professional.

  • Check local heat alerts and guidance.
  • Use cooling centers if your home is too hot.
  • Call emergency services for urgent danger.
  • Seek medical advice for personal health questions.

Keep indoor spaces cooler

Small actions can reduce indoor heat, especially before the hottest part of the day. Close blinds or curtains on sunny windows if helpful, limit oven use, and spend time in the coolest available room. Fans may help some people feel cooler, but follow public health guidance because fans may not be enough in extreme heat.

  • Use shades or curtains to reduce sun exposure.
  • Limit heat-producing appliances when practical.
  • Move activities to the coolest room.
  • Follow local guidance about fan use.

Adjust outdoor activity

When heat is high, shift outdoor chores, exercise, errands, and pet walks to cooler times when possible. Take breaks, seek shade, and keep water available. Workers should follow workplace and local safety guidance. Do not ignore symptoms or pressure others to continue activity when they feel unwell.

  • Plan errands for cooler hours when possible.
  • Take breaks in shade or cooled spaces.
  • Bring water for people and pets.
  • Stop activity if someone feels unwell.

Check in and stay connected

Heat waves can become isolating when people stay indoors, lose power, or avoid travel. Keep communication simple. Ask whether people have cooling, water, medication access, and a way to receive alerts. If someone cannot cool down or seems in urgent danger, seek emergency help rather than trying to manage it alone.

  • Call or text scheduled contacts.
  • Share official cooling resource information.
  • Check on pets as well as people.
  • Use emergency services for urgent danger.

After

After the event

Do not rush back to normal

Heat can linger indoors and affect people after the hottest hours or after an official alert ends. Continue using cooling habits until indoor spaces are comfortable and local guidance changes. Check on people and pets who may still be affected. If power outages occurred, review food and medication guidance as needed.

  • Keep monitoring indoor temperatures.
  • Continue check-ins for vulnerable contacts.
  • Follow public health updates until heat eases.
  • Review outage guidance if power was lost.

Restock and reset

After a heat wave, refill water supplies, wash reusable bottles, replace pet supplies, recharge fans or backup batteries if used, and update your cooling plan. Notice which rooms became hottest and which cooling options were realistic. Small changes now can make the next hot period easier.

  • Refill stored water if used.
  • Recharge backup batteries.
  • Restock pet and household basics.
  • Update cooling location notes.

Review health and comfort needs

If heat created personal health concerns, follow up with a medical professional or local public health resource. Review whether medications, mobility, work schedules, childcare, or transportation made cooling harder. Do not treat this guide as personal medical advice. Use it as a prompt to ask the right trusted sources.

  • Note any symptoms or concerns to discuss with professionals.
  • Review medication storage questions.
  • Update transportation or cooling center plans.
  • Ask local agencies about available support.

Improve one part of the plan

Preparedness becomes easier when you improve one practical step at a time. You might add a check-in partner, find a closer cooling location, move a pet bed to a cooler room, or adjust errand timing. The best plan is one your household can actually use without needing perfect conditions.

  • Choose one improvement for the next heat event.
  • Share the updated plan with household members.
  • Save official heat guidance links.
  • Plan earlier action for the next forecast.

Pair this guide with a practical emergency kit, a written family communication plan, and the heat wave preparedness checklist. If the event could affect property or records, review insurance basics and important documents before conditions become stressful.

Scenarios

Practice steady decisions

The apartment stays hot overnight

Your home remains uncomfortable after sunset, and sleep is difficult.

Steady action: Move to the coolest available room, use safe cooling habits, and consider public cooling resources if home remains too hot.

Official reminder: Follow local public health guidance and seek medical help for personal health concerns.

A neighbor has limited cooling

A nearby older adult says their home is very warm and they are unsure where to go.

Steady action: Share official cooling center information, help them contact a trusted person if appropriate, and check back at an agreed time.

Official reminder: Call emergency services if there is urgent danger.

A pet walk is planned midday

Your pet needs exercise, but the hottest part of the day is approaching.

Steady action: Shorten or reschedule the walk for a cooler time, provide water, and avoid hot enclosed spaces.

Official reminder: Follow local animal safety and public health guidance during extreme heat.

Outdoor work cannot fully stop

Someone in the household has outdoor tasks or a commute during a heat alert.

Steady action: Plan breaks, shade, water, lighter timing where possible, and follow workplace or local safety guidance.

Official reminder: Use official heat guidance and seek medical advice for personal concerns.

Checklist preview

Heat Wave Preparedness checklist

  • Make a cooling plan.
  • Schedule check-ins.
  • Follow health guidance.
View checklist hub

Morgan Hale

Need a practical next step?

Ask Morgan about disasters, preparedness, checklists, supplies, or practical next steps.