I am wondering for a 3 months old baby how long can I bring them outdoor?

I think it is great to bring babies outdoor every day for about 1 hour for fresh air, exposure to environment . I don't think there is a recommended period of time but keeping in mind Singapore outdoor can get quiet hot and stuffy, you should pick up the cues from your baby. I bring my gal out for strolls everyday. When they are younger the period is shorter because they need to nap more often so even a half hour is good. As they get older the strolls become longer .