If We Don’t Have Air Conditioning, Should We Leave Our Windows Open Or Closed With The Fans Running?

We’ve got an old house with no air conditioning. It’s about 98 degrees outside and the house is getting HOT. We’ve got fans running in the rooms we are in and turn them off when we leave the room. Should we leave the windows open to help get air circulating (but let in the outside heat), or close them (keeping the already hot air in, but the super hot oustide air out)?
Best answer could help lots of people during all these heat waves.
Thanks.

How Can I Keep Mice Out Of My Car Heater And Fans?

Mice keep building nest in my fan system and have even had babies in my heating/air conditions system. They have been caught in the fan and died in it which has caused my car the smell very bad. It has cost me a lot of money to have the garage remove the nest and dead mice.

Did World War 2 Tanks (such As The Panzeriv) Have Air Conditioning And Heating?

No AC, small fans. good heating when hit by an armor-piercing shell.l What great tank for its time!