The air in Barueri today feels a bit heavy, like the end of a warm afternoon when the breeze has died down. Breathing is still perfectly fine for most people, but you might notice a slight thickness in the air if you stop and pay attention.
It’s still a decent day to be outside, though you might want to take it easy on any hard exercise. If you were planning a long run or a bike ride, consider a gentler walk instead. Opening the windows for a short while is alright, but keeping them closed during the midday hours might help the air inside feel fresher.
For children, older folks, or anyone with breathing or heart concerns, it’s worth being a little more careful today. If you’re in that group, try not to spend too much time outdoors during the warmest part of the day, and keep any physical activity light. Most people won’t notice much difference, but it’s a wise precaution.
Overall, there’s nothing to worry about, just a typical day when the air isn’t at its crispest. If you’re sensitive, a short break indoors with the windows shut for a few hours will make everything feel comfortable again.