The air in ساو باولو feels heavy and a bit hazy today, like the city is wrapped in a thick blanket. Breathing might leave you with a tickle in your throat, and the sky looks a little muted. It is not the crisp, clean air we love, but the day is still manageable if you take it easy.

It is not the best day for a long run or a vigorous bike ride outdoors, especially if you plan to be active for a while. Opening the windows wide might let that stuffy feeling inside, so it is better to keep them shut if you can. A short stroll to the corner shop is fine, but skip the intense workout in the park.

For little ones, older neighbours, and anyone with a sensitive chest or heart condition, it would be wise to take it slower today. If you or someone you know has asthma or other breathing troubles, keeping exertion light is a simple way to stay comfortable. The air is just a bit stubborn, not dangerous, so there is no need for alarm.

The good news is that this kind of day usually passes quickly, and things will likely clear up by tomorrow. A little patience and a quiet afternoon indoors will see you through just fine. If you do go out, a short walk is perfectly fine, and you can always enjoy the fresh air from a window later.