How is air quality in Brazil in 2026?

São Paulo concentrates vehicle exhaust and industrial corridors that keep everyday NO2 and fine particles elevated beside busy avenidas, then improve a few quieter blocks inland: Living in São Paulo. CETESB publishes live São Paulo state indices so movers can compare stations rather than vibes. Rio’s South Zone often benefits from Atlantic ventilation on ordinary days, while basin and inland pockets trap more: Living in Rio de Janeiro.

Dry-season biomass burning changes the map. Amazon and Cerrado queimadas can loft smoke south and southeast, turning distant capitals hazy even when local traffic is normal: Wildfire smoke and Dry season. Brasília’s crisp winter air can still carry dust and regional fire haze: Living in Brasília. Porto Alegre and other southern cities felt extreme transported smoke events in September 2024 alongside local pollution: Living in Porto Alegre.

Prefer side streets and higher floors if pollution sensitivity is high, and check whether your building allows window sealing plus a portable filter for smoke weeks. Stagnant summer heat can worsen ozone and discomfort together: Summer heat and Humidity. Wet-season storms scrub some particles but do not erase every traffic signature: Wet season. Shortlist climate fit first: Best climate and Where to live in Brazil.