Close windows and doors
Block sunlight with curtains or blinds
Turn on an air conditioner
Use a fan to circulate cool air
Lower the thermostat
Turn off heat sources and electronics
Seal gaps around doors and windows
Use ice in front of a fan
Open windows at night if outside air is cooler
Keep lights off or use LED bulbs
Reduce humidity with a dehumidifier
Move hot appliances out of the room
Place cool, damp cloths near airflow
Use breathable bedding and fabrics