I simply don't leave the house unless I absolutely have to, and being retired due to disability, that's easier for me to manage. I also follow the hot weather rules I learned living in Perth Western Australia (16 years and only 1 year of that was in a house with aircon) - open windows early (if you haven't already had them open all night) to get cool air in only for as long as it's cooler outside than in; as soon as the heat starts to rise, shut all windows and any curtains and blinds to insulate the house from getting any hotter inside for as long as possible; stay in rooms on the opposite side of the house to the sun, if you can; do NOT open curtains, doors or windows until it is once again cooler inside than out and keep them open all night if you can - in Aus they are usually sliding windows, side to side, with flyscreens attached to the outside of the frames, so you open them up a few inches and drop a rod into the track to prevent them being pushed open any further by a potential burglar. In the UK we open the top windows in all rooms upstairs a few inches during the night to get a flow through of air and prop all of the bedroom doors open. We also invested in a portable aircon unit for the bedroom the year I was diagnosed with breast cancer (I'm fine now, NED - No Evidence of Disease - currently) because the meds made my hot flashes exponentially worse and sweating through the mattress wasn't a nice experience.