The air in Campinas feels a bit heavy today, like the city is wrapped in a soft, hazy blanket. Breathing isn't a struggle, but you might notice a slight thickness in the air, especially if you're sensitive to it. It's not fresh and crisp, but it's not smoky or stuffy either, just a little on the tired side.
You can still step outside for a stroll or run a quick errand without much worry, though it's not the best day for a long, intense workout in the park. If you were thinking of opening the windows wide to air out the house, you might want to keep them cracked instead of fully open, as the air inside is likely just as good. For most people, it's fine to go about your normal routine, but there's no need to push yourself hard outdoors.
If you have young children, are an older adult, or live with a heart or lung condition, you might want to take it a bit easier today. The air is a little more work for the body than usual, so a gentle walk or a shorter time outside is a smart choice. But for the average healthy person, it's nothing to fret over, just a day to be mindful, not alarmed.
The main thing is to listen to your body: if you feel any tightness in your chest or a tickle in your throat, just slow down and find a shady spot to rest. By tomorrow, the air will likely shift, and this mild heaviness will pass. So don't worry, Campinas is taking care of you, and a little caution today goes a long way.