How are you dealing with this heat wave?

It's not ridiculously hot here, 80s/90s, but we don't have ac. Or a mall. Most people don't have ac either. It's not usually necessary. I'm concerned about the baby. He's 6 mo old and EBF. I've been trying to feed him more, but he's been spitting up more too. Should I give him water?

Any ideas on how to keep a baby cool? He's looked flushed all day.