Extreme Heat and Humidity


Stay healthy during a heat warning

Environment and Climate Change Canada (ECCC) issues a heat warning for the City of Ottawa when they forecast the following conditions for two or more days in a row:

  • the temperature will exceed 31°C during the daytime and the nighttime temperature will not be cooler than 20°C,  or
  • a humidex of 40 C or higher (feels-like temperature that accounts for moisture in the air)

Heat illnesses are preventable.  Extreme heat can cause dehydration, heat exhaustion, heat stroke and even death. High temperatures can put everyone at risk, but health risks are greatest for:

  • Older adults
  • Infants and young children
  • People with chronic illness including cardiac and respiratory conditions, dementia or mental illness
  • Outdoor workers and athletes
  • People experiencing homelessness
  • People taking certain prescription medications for conditions such as Parkinson’s disease and depression (ask your doctor or your pharmacist about your medications)

Prevent heat related illnesses

  • Drink plenty of fluids throughout the day, preferably water and limit or avoid caffeine and alcohol.
  • Avoid strenuous outdoor physical activity.
  • Limit or avoid direct exposure to the sun.
  • Dress in light and loose fitting clothing and wear a hat with ventilation holes when in the sun.
  • Look for shade or a cool shelter in an air-conditioned location such as a shopping mall, cinema, library or community centre.
  • Never leave children, the elderly or pets unattended in a car, even with the windows open.
  • If you don’t have air conditioning but have one or more large fans:
    • When the outside air is cooler than inside, use a fan in or next to a window to bring in the cooler air from outside, especially from a window on the shaded side of the building. If a second fan is available, use it to blow air out of the home through a different window to help move cooler air throughout the home.
    • If you only have one fan but want cooler outside air to come in to more than one room, open windows in each of the rooms and use the fan to blow air out of a window in another room or hallway – air will be drawn into the home through the other open windows.
    • When it is hotter outside than inside, keep the windows closed and shaded and use a fan to blow air at yourself. Drink lots of fluids so you perspire normally – the sweat evaporates more quickly with air moving over it to help cool you off. Please note this may not be enough when the humidity is very high, it is very hot, or your body doesn’t produce enough sweat – in these situations you may have to seek a cool shelter.
  • Breastfeeding babies/children should be fed following the child’s cues.  Nursing mothers should keep hydrated in order to produce a sufficient amount of milk.
  • Take frequent cool showers or baths.  If you cannot shower or bath easily, sponge often with cool wet towels. Focus on cooling the back of the neck, under the arms and groin area.
  • Soak feet and hands in a basin of cool water. 
  • Stay connected with people in your community who have a difficult time coping with hot weather and those who live alone and check on them regularly.

Where to cool off in Ottawa

Residents and visitors can cool down at City of Ottawa poolssplash padswading poolsbeaches, and parks and greenspaces, as well as at recreation facilities  and public libraries

Before going to the City of Ottawa public beaches, you may want to check the beach water quality results to find out if a no-swim advisory has been issued. 

Heat, air pollution and sun safety

High air-pollution and UV index levels often occur during hot weather conditions. People with breathing and heart problems, and parents and caregivers of children, should pay attention to the hourly Air Quality Health Index

Check the UV index forecast daily at theweathernetwork.comweather.gc.ca or in the local media. Choose a sunscreen and lip balm with an SPF of 30 or higher a wide-brimmed hat, sunglasses and SPF lip balm. 

Additional information

Check out more resources on our website on hot weatheroutdoor air qualitysun safety, and water safety.  Our Parenting in Ottawa website has information about keeping children safe during hot weather and the Ontario Ministry of Labour has information on managing heat stress in the workplace

Call the Ottawa Public Health Information Centre at 613-580-6744 (TTY: 613-580-9656).

You can also connect with us on FacebookTwitter, and Instagram.

Medical advice 

Contact Telehealth Ontario by calling 1-866-797-0000 for free medical advice.  If it is a medical emergency call 9-1-1 immediately.  

Sign up for weather advisories 

You can now get official weather forecasts and alerts straight to your phone with WeatherCAN, Environment Canada’s new weather application. This app will let you know when a heat warning or other extreme weather is forecast for our region. Download it now! 

Surviving Summer power outages during heat waves
During heat waves, thunderstorms or a high demand for electricity may result in power outages in your home - affecting your access to air conditioning or electrical fans. Extreme heat is hard on our bodies, which are not acclimatized to hot conditions. Exposure to extreme heat can lead to dehydration, heat exhaustion, heat stroke,

Take the following measures to both prepare for and cope with extreme heat during a summer power outage.

Preparing for Summer Power Outages
  • Weather-strip doors and windows to keep cool air inside.
  • Cover windows that receive morning or afternoon sun with drapes, shades, awnings or shutters. Outdoor awnings and shutters can reduce heat that enters a home by up to 80 percent.
  • Have on hand materials to make temporary window reflectors. Aluminium foil covered cardboard works well to reflect the heat back outside.
  • Keep storm windows up all year.
  • Have a heat emergency kit available that includes food, water and a battery operated radio and flashlight. Be sure to include food that will not spoil and does not require heating.
  • Think about people who may need help in a heat wave. Make sure they are prepared and able to cope.
Coping with extreme heat at home during a power outage

Keep your home cool

  • Close all blinds and drapes on the sunny side of your home, but keep windows slightly open.
  • Install temporary window reflectors between windows and drapes, such as aluminium foil covered cardboard. This will help reflect heat back outside.

Keep yourself cool

  • Stay out of the sun and spend time on the lowest floor of your home where it is cooler. Spend at least two hours a day in a cool environment to cool your body during extreme heat.
  • Drink plenty of fluids especially water. Avoid alcohol and caffeine. Eat small light meals.
  • Take frequent cool showers or baths.
  • If you cannot shower or bath easily, sponge often with cool wet towels. Focus on cooling the back of the neck, under the arms and groin area. Soak feet and hands in a basin of cool water.
  • Dress in light and loose fitting clothing.
  • Avoid unnecessary strenuous work or activity outside, especially between 10 and 4 p.m. If work must be done, take frequent water breaks in the shade.
  • Talk with your doctor, nurse or pharmacist if you are taking medications or if you are feeling unwell. Some medications make it harder for your body to control its temperature. Make sure to consult with your doctor if you are on a restricted fluid intake.
  • Listen to the radio or call 3-1-1 for directives about cooling stations and emergency reception centres.

Stay connected and help others

  • Keep in daily contact with friends and family to let them know how you are feeling. Ask for help if the hot weather is making you feel uncomfortable.
  • Check on family, friends and neighbours who may need help coping with the heat, especially those who live alone. People with physical and mental disabilities will need assistance keeping cool.
  • Never leave people or pets in a parked car, even with the windows open. The temperature will rise dangerously in only a few minutes.
What to do in a heat wave
Protect yourself
  • Avoid outings and activities during the warmest hours (10 am to 4 pm)
  • Stay in the shade, or consider bringing an umbrella with you
  • Wear light and loose cotton clothing
  • Use sunscreen, and wear sunglasses and a hat outside
  • Take water with you on outings 
  • Shut blinds and curtains of south exposed windows
  • Keep windows shut as long as the outside temperature is hotter than the inside
  • Open screened windows at night to encourage cool airflow
Keep Yourself Cool
  • Stay inside the coolest rooms in your home
  • If you do not have an air conditioner where you live, use a fan and try to spend time in an air conditioned place for a few hours every day
  • Take cool showers or baths throughout the day and cool your body with a cold washcloth  
  • Soak your feet or hands in cold water to cool your entire body
Talk With Your Doctor, Nurse or Pharmacist
  • Consult your health care provider, especially if you are taking medications or feeling unwell 
  • Some medications make it harder for your body to control its temperature such as some antidepressants and Parkinson's disease drugs
  • Consult with your doctor if you are on a restricted fluid intake diet He/she will need to adjust this amount during hot weather days
Drink Lots of Fluids
  • Drink 8 -12 glasses of fluid every day.  Fluids include: water, cold soup/broth, fruits and vegetables high in water content (e.g. melons, strawberries, peaches, peppers and carrots)
  • Avoid or minimize drinking alcohol and caffeinated drinks (coffee, tea, and some carbonated drinks)
  • Eat smaller meals
Stay Connected
  • Ask for help from a family member, friend, or neighbour if the hot weather is making you feel uncomfortable
  • Keep in daily contact with your friends and family to let them know how you are feeling
  • Reach out to people who have a difficult time coping with hot weather in your community and help them keep cool

Need more info? Call Ottawa Public Health at 613-580-6744

Effects of Hot Weather
Prepare for hot weather to prevent heat-related illness and death. Our bodies take about two weeks to get used to sudden spikes in temperature. That is how people in hot climates and outdoor workers can tolerate extreme heat while others cannot. . Children, the elderly and the chronically ill are particularly vulnerable to the effects of heat.

Make sure that you and those you care for do not suffer unnecessarily during hot weather events. Check on those who may need help accessing air conditioning, such as the elderly and chronically ill, especially those who live in high-rise buildings. Watch for signs of

  • dehydration
  • heat exhaustion
  • heat stroke
  • sunburn

Take precautions during hot weather, have a look at our fact sheets or cool off during the heat by visiting some of these local places. Learn what to do during power outages in a heat wave.

 Dehydration is caused by the excessive loss of water and salts from the body due to illness or from prolonged exposure to heat. City of Ottawa Paramedics would like to remind you that severe dehydration can easily become a life-threatening condition for infants and the elderly.


  • Severe sweating
  • Extreme heat
  • Diarrhea
  • Vomiting
  • Certain medication can cause the body to lose water, and, if not replenished, can accelerate the onset of dehydration

Preventing Dehydration:

  • Drink plenty of fluids throughout the day - more when sweating
  • Avoid strenuous work or sports activities during the intense sunlight hours from 10 a.m. to 3 p.m.

What to look for:

  • Thirst
  • Dry skin
  • Fatigue
  • Light headedness
  • Confusion
  • Dry mouth (mucous membranes)
  • Increased heart rate
  • Increased breathing rate
  • Less frequent urination


  • Move the person to a cool and dry place
  • Have the person lie down and rest
  • Have person drink fluids such as water, juice or sports drinks
  • Monitor the person - especially children and the elderly
Heat exhaustion
Heat exhaustion is a non-life-threatening condition caused by the excessive loss of water and salts from the body due to prolonged exposure to extreme heat. City of Ottawa Paramedics remind you that continued exposure may lead to heat stroke, which is life-threatening. Young children and the elderly are most susceptible to heat exhaustion.


  • Prolonged exposure to extreme heat
  • Loss of body water and salts - usually through sweating
  • Not drinking enough fluids
  • Certain illnesses will also cause heat exhaustion

Preventing Heat Exhaustion:

  • Keep cool - take frequent breaks when working or playing outdoors in extreme heat
  • Wear light-coloured clothes and hat - they reflect heat from the sun
  • Avoid strenuous work or sport activities during the intense sunlight hours from 10 a.m. to 3 p.m.
  • Drink plenty of fluids throughout the day, preferable water. 100% juice or sports drinks also help to keep you hydrated. 

What to look for:

  • Headache
  • Blurred vision
  • Nausea or upset stomach
  • Vomiting
  • Sluggishness or fatigue
  • Thirst
  • Profuse sweating
  • Moderate increase in body temperature


  • Move the person to a cool and dry place
  • Have the person lie down and rest
  • Apply cool water to skin and reapply often
  • Fan the wet skin
  • Have person drink fluids such as water, juice or sports drinks (Gatorade™)
  • Apply ice to head, neck, armpits and groin areas
  • If the person is showing signs of heat stroke call 9-1-1 immediately
Heat stroke
Heat stroke is a life-threatening condition. City of Ottawa Paramedics would like to remind you to seek immediate medical attention if you, or someone you know is suffering from heat stroke. Heat stroke occurs when the body cannot cool itself, usually by sweating and the internal (core) temperature of the body becomes too high. Children, seniors, outdoor workers and sports enthusiasts are most susceptible to heat stroke.


  • The inability of the body to cool itself after prolonged exposure to extreme heat

Preventing Heat Stroke:

  • Keep cool - take frequent breaks when working or playing outdoors in extreme heat
  • Wear light-coloured clothes and hat - they reflect heat from the sun
  • Avoid strenuous work or sports activities during the intense sunlight hours from 10 a.m. to 3 p.m.
  • Drink plenty of fluids throughout the day such as water, 100% fruit juice or sports drinks 
  • Do not drink caffeinated drinks or alcoholic beverages - they accelerate the effects of heat stroke

What to look for:

  • Headache
  • Dizziness
  • Disorientation, agitation or confusion
  • Sluggishness or fatigue
  • Seizures
  • Hot dry skin
  • Increased body (inner) temperature
  • Loss of consciousness
  • Rapid heart beat
  • Hallucinations


  • Call 9-1-1 immediately - heat stroke can be deadly
  • Move the person to a cool and dry place
  • Apply cool water to skin and reapply often
  • Fan the wet skin
  • Apply ice to head, neck, armpits and groin areas
Sun burn
Sunburn occurs when skin cells that are not protected from direct exposure to the sun are burned. Depending on the length of the skin's exposure the result can range from a mild burning sensation to severe blistering of the affected area. Research shows that repeated overexposure to the sun may lead to various forms of cancer including melanoma. Remember, there is no such thing as a healthy tan.


  • Overexposure to the sun
  • Children and people with fair or freckled skin, blue eyes, and light-coloured or reddish hair are generally more susceptible to sunburns
  • Certain medications can cause the skin to burn quicker - talk to your pharmacist about what medications can cause this

Preventing Sunburn:

  • Stay in the shade and avoid the sun between 11 am and 4 pm when the UV Index is 3 or higher  
  • The sun's harmful rays can get through fog, haze and light cloud cover
  • Apply sunscreen and lip balm with a Sun Protection Factor (SPF) or 30 or more that protect against both UVA and UVB rays. Do not apply sunscreen to babies under 6 months
  • Wear a wide-brim hat to protect the face, ears and neck
  • Wear tightly woven clothing including long sleeved shirts and pants to minimize exposure to the sun
  • Pay special attention around water, snow and concrete - they all reflect the sun and will intensify its effects

What to look for:

  • Skin is red, tender and warm to touch
  • Blisters
  • Severe reactions such as fever, chills, nausea or rash
  • Fever or chills
  • Peeling skin several days later

Symptoms may not appear for several hours and the full effect of the burn may take up to 24 hours to occur.


  • Cool compresses, moistened wash cloths placed in freezer, or taking a cool bath will help minimize pain and swelling
  • Apply aloe gel if needed; avoid use of creams or lotions that can hold heat inside the skin or contain numbing medication (i.e. benzocaine or lidocaine). 
  • Pain medications such as Tylenol™ or Advil™ may help to reduce pain and swelling - never give Aspirin™ (ASA) to children
  • Severe sunburn requires medical attention, when in doubt consult your health care provider
Beat the Heat this Summer

Beat the heat (PDF) [176 KB]

When both temperature and humidity are high, it is hard for our bodies to cool down. The City of Ottawa has developed a plan to respond to community needs during extreme heat events.  Ottawa Public Health will issue heat warnings to raise awareness health risks and suggest ways people can cool off when Environment and Climate Change Canada issue a heat warning.  New health-based thresholds were adopted in 2016.  A heat warning will be issued when daytime temperatures are expected to be warmer than 31°C and night time temperatures no cooler than 20°C or a humidex value of 40°C are expected for two or more days. 

Try some of these cool suggestions...
Enjoy one of the City of Ottawa pools, splash pads, wading pools or beaches.. When a heat warning is in effect, your local City of Ottawa pool will convert all lane swims to leisure swims. Stay cool and have fun! For daily beach swimming updates call 613-580-2424, ext. 13219 or look online at OttawaPublicHealth.ca

Visit one of our 33 Ottawa Public Library branches. Why not read a good book or surf the web in the air-conditioned comfort of the Ottawa Public Libraries? Call InfoService for branch locations and hours of operation at 613-580-2940. 

Visit  City Hall or one of our Client Service Centres. You will find artwork and lots of info on what the City has to offer as well as a place to cool down. City Hall is located at 110 Laurier Avenue West.

See a movie at Imagine Cinemas St. Laurent Centre. When a heat warning is in effect, Imagine Cinemas St. Laurent Centre offers affordable movie tickets. 

Protect Yourself and Help Others during Hot Weather

  • Drink plenty of water  
  • Avoid heavy outdoor activity 
  • Wear a hat, light and loose clothing, sunscreen and sunglasses when going outside
  • Cool off in an air-conditioned room
  • Talk with your doctor, nurse or pharmacist if you are taking medications.  Some medicines like antidepressants and Parkinson's disease medications make it harder to control body temperature.
  • Stay connected with people in your community who have a difficult time coping with hot weather and those who live alone. Check on them regularly.
City of Ottawa facilities with public access and air-conditioning
 For facility hours please contact facility directly or call 3-1-1 for more information.
City of Ottawa facilities with public access and air-conditioning

Type of Building

Building Name


Phone Number

Administration Building

Cumberland/Centrum Municipal Office

255 Centrum Boulevard


Administration Building

Goulbourn Municipal Office

2135 Huntley Road


Administration Building

Kanata Client Services Centre

580 Terry Fox Drive


Administration Building

Osgoode Municipal Office - Metcalfe

8243 Victoria Street


Administration Building

Rideau Twp Satellite Office

2155 Roger Stevens Drive


Administration Building

100 Constellation

100 Constellation Crescent


Administration Building

Ben Franklin Place

101 Centrepointe Drive


Administration Building

Ottawa City Hall

110 Laurier Avenue West



Dulude Arena/CC

941 Clyde Avenue



Jim Durrell Recreation Complex

1265 Walkey Road



Fred G. Barrett Arena

3280 Leitrim Road



J.B. Potvin Arena no AC, however can sit in stands to cool off

813 Shefford Road

613-741-1537 -


Kanata Recreation Complex

100 Walter Baker Place



Manotick Arena & CC

5572 Doctor Leach Drive



Metcalfe CC & Larry Robinson Arena

2785 Eighth Line Road



Navan Memorial Centre and Arena

1295 Colonial Road



Osgoode Recreation Complex

5630 Osgoode Main Street



R.J. Kennedy Memorial Centre

1115 Dunning Road



Richmond Arena & CC

6095 Perth Street



Stittsville Arena & CC

10 Warner-Colpitts Lane



Tom Brown: Arena

141 Bayview Road


Community Building

Dunrobin Community Hall

1151 Thomas Dolan Parkway


Community Building

Graham Park Community Building

25 Esquimault Avenue


Community Building

Greenboro Pavillion

14 Tapiola Crescent

613-580-2424, ext. 32643

Community Building

Huntley Community Hall

108 Juanita Avenue

613 839-2959

Community Building

Kenmore Community Hall

3242 Yorks Corner Road

613 580-2424, ext. 30655

Community Building

Old March Town Hall

821 March Road

613-580-2424, ext. 14371

Community Centre

Albion Heatherington CC

1560 Heatherington Road


Community Centre

Alexander CC with Gym

960 Silver Street


Community Centre

Alfred Taylor Rec Ctr.

2300 Community Way


Community Centre

Beaverbrook Community Centre

2 Beaverbrook Drive

613-580-2424, ext. 14371

Community Centre

Bellevue Manor Community Centre

1485 Caldwell Avenue


Community Centre

Canterbury Community Centre

2185 Arch Street


Community Centre

Carleton Heights CC

1665 Apeldoorn Avenue


Community Centre

Carlington Recreation Centre & Gym

1520 Caldwell Avenue

613 798-8920

Community Centre

Centre Richelieu Community Centre

300 Des Peres Blancs Avenue

613-580-2424 ext. 28464

Community Centre

Churchill Senior Recreation Centre

345 Richmond Road


Community Centre

Constance Bay CC & Library

262 Len Purcell Street


Community Centre

Cyrville CC

4355 Halmont Drive


Community Centre

Dempsey CC with Gym

1895 Russell Road


Community Centre

Eva James Community Centre with Gym

65 Stonehaven Drive


Community Centre

Fisher Heights Community Place

31 Sutton Place

613 580-2424, ext. 41238

Community Centre

Fitzroy Harbour CC

100 Clifford Campbell Street


Community Centre

Galetta Community Hall

119 Darwin Street


Community Centre

Glebe Community Centre

175 Third Avenue


Community Centre

Glen Cairn Community Centre

182 Morrena Road

613-580-2424, ext. 14371

Community Centre

Greely CC

1448 Meadow Drive

613-580-2424, ext. 30655

Community Centre

Greenboro CC with Gym & Library

363 Lorry Greenberg Drive


Community Centre

Heron Rd Multi-Service Cntr.

1480 Heron Road


Community Centre

Hunt Club Riverside CC with Gym

3320 Paul Anka Drive


Community Centre

Huntley Community Mess Hall

3911 Carp Road


Community Centre

March Central CC

1030 Riddell Drive

613 580-2424, ext. 14371

Community Centre

McNabb CC

435 Bronson Avenue


Community Centre

Michele Heights CC with Gym

2955 Michele Drive


Community Centre

Ottawa South Community Centre

260 Sunnyside Avenue


Community Centre

Queenswood Heights Community Centre

1485 Duford Street

613-580-2424, ext. 29221

Community Centre

Rideauview Community Centre

4310 Shoreline Road


Community Centre

Rockcliffe Park Library and CC

380 Springfield Road


Community Centre

Routhier School CC With Gym

172 Guigues Avenue


Community Centre

Roy G. Hobbs Community Centre

109 Larch Crescent

613-580-2424, ext. 29221

Community Centre

Sandy Hill Community Centre

250 Somerset Street E


Community Centre

South Fallingbrook Community Centre

998 Valin Street


Community Centre

Tanglewood Park Community Centre

30 Woodfield Drive

613-580-2424, ext. 41555

Community Centre

Vernon Recreation Centre

7950 Lawrence Street

613-580-2424, ext. 30655

Indoor Pool

Brewer Park Complex

100 Brewer Way


Indoor Pool

Kanata Leisure & Wave Pool Centre

70 Aird Place


Indoor Pool

Sawmill Creek Pool (AC in hall)

3380 D'Aoust Avenue


Performing Arts Facility

Shenkman Arts Centre

245 Centrum Boulevard

613 580-2787

Public Library

Library: Alta Vista

2516 Alta Vista Drive


Public Library

Library: Blackburn Hamlet

199 Glen Park Drive


Public Library

Library: Carlingwood Branch

281Woodroffe Avenue


Public Library

Library: Carp

3911 Carp Road


Public Library

Library: Centennial

3870 Richmond Road


Public Library

Library: Elmvale Acres

1910 Street Laurent Boulevard


Public Library

Library: Emerald Plaza

1547 Merivale Road


Public Library

Library: Greely

7010 Parkway Road


Public Library

Library: Hazeldean

50 Castlefrank Road


Public Library

Library: Main

120 Metcalfe Street


Public Library

Library: Manotick

5499 South River Road


Public Library

Library: Metcalfe

2782 Eighth Line Road


Public Library

Library: Munster Hamlet

7749 Bleeks Road


Public Library

Library: North Gloucester

2036 Ogilvie Road


Public Library

Library: North Gower

6579 Fourth Line Road


Public Library

Library: Orleans

1705 Orleans Boulevard


Public Library

Library: Osgoode

5630 Osgoode Main Street


Public Library

Library: Richmond

6240 Perth Street


Public Library

Library: Rosemount

18 Rosemount Avenue


Public Library

Library: Stittsville

1637 Stittsville Main Street


Public Library

Library: Vernon

8682 Bank Street


Recreation Complex

Dovercourt Recreation Complex

411 Dovercourt Avenue


Recreation Complex

Goulbourn Rec Complex

1500 Shea Road


Recreation Complex

J.C. Mlacak Centre

2500 Campeau Drive

613-580-2424 ext. 33251

Recreation Complex

Jack Purcell Rec Complex

320 Jack Purcell Lane


Recreation Complex

Lowertown Complex

40 Cobourg Street


Recreation Complex

Nepean Sportsplex

1701 Woodroffe Avenue


Recreation Complex

Bob MacQuarrie - Orléans Recreation Complex

1490 Youville Drive


Recreation Complex

Pinecrest Recreation Complex

2240 Torquay Avenue


Recreation Complex

Plant Bath Recreation Centre

930 Somerset Street West


Recreation Complex

Ray Friel Recreation Complex

1585 Tenth Line Road


Recreation Complex

St Laurent/Don Gamble Complex

515-525 Cote Street


Recreation Complex

Walter Baker Sports Centre

100 Malvern Drive


For more information call Ottawa Public Health Information at 613-580-6744.

Fan facts
  • use your fan in or next to a window, box fans are best
  • use a fan to bring in the cooler air from outside
  • use your fan by plugging it directly into the wall outlet
  • if you need an extension cord, it should be CSA (Canadian Standards Association) approved


  • don't use a fan in a closed room without windows or doors open to the outside
  • don't believe that fans cool air. They don't. They just move the air around. Fans keep you cool by evaporating your sweat.
  • don't use a fan to blow extremely hot air on yourself. This can cause heat exhaustion to happen faster


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