The best time to act is now!
Do this to keep the coolest room 10 degree Celsius cooler than the maximum temperature on a very hot day..
You will need at least one thermometer (the more the better) and the predicted hourly temperaures for each hot day
More things you can do:
Actions in the long-term - preparing for the next heat wave
If you have to go outside
Park your car in the shade, even if it means you have to walk a bit longer to get there
Cool your car by shading it with cardboard or aluminium foil (The screens some use in winter to stop the windscreen freezing)
What do you do to stay cool during extreme heat?
Across this website we use the following symbols for climate change tips
Cost of the action:
Other benefits may include personal health, water savings, nature conservation, better air quality, income for the local economy