SmogRank / Episodes / Brazil
Southern Brazil, 22 to 25 August 2024
For 4 days, from 22 to 25 August 2024, 24 cities in Brazil had PM2.5 at least twice their usual for the time of year. The worst reading was São José do Rio Preto, São Paulo, Brazil: 93.8 µg/m³ on 23 August, about 4.9× its usual 19.3. Ended 25 August.
Likely smoke from fires Fires were detected within 300 km of the city on 70% of the counted city-days. Satellites see crop, field and forest fires alike, so this doesn't say which burned.
Cities reached 24 in 1 country
Days 4 22 to 25 August 2024
Worst day 22 August 17 cities counted
Furthest above usual 4.9× São José do Rio Preto
Day by day
Play 22 August 17 cities at twice their usual or more
Barra Longa Itabira Timóteo Coronel Fabriciano Ipatinga Vitória Vila Velha Nova União Serra Congonhas Santos Belo Horizonte São Paulo Betim São José dos Campos Itaquaquecetuba Piracicaba Santo André Ferraz de Vasconcelos Rio Claro Ibirité Ribeirão Preto Limeira Duque de Caxias Taubaté Rio de Janeiro Jundiaí Guaratinguetá Campinas Paulínia São José do Rio Preto On the map: 2,404 fire detections.
19 Aug 20 21 22 23 24 25 26 27 28 Every measured city in the area, coloured by its PM2.5 that day; a dark ring marks a city at twice its usual or more. Bars: cities counted each day, coloured by their median level. Choose a day or press play; without JavaScript, the days link to that day's world ranking. Fires, seen Heat NASA satellites detected that day; bigger and glowing means more detections in the area. Farm burning and other fires count too, not only wildfires.Under the cities, for each UTC day: fires NASA satellites detected, smoke NOAA analysts traced and volcanic ash warnings for aircraft. They show what was in the air, not that it caused the readings. Mapped for 8 of the 10 days shown.
Fires: NASA FIRMS (VIIRS). Traced smoke: NOAA Hazard Mapping System. Volcanic ash: aviation ash warnings (SIGMETs) via NOAA's Aviation Weather Center.
How it spread
São José do Rio Pre… São José do Rio Preto, 19 August: 43.3 µg/m³ São José do Rio Preto, 20 August: 41.5 µg/m³ São José do Rio Preto, 21 August: 47.7 µg/m³ São José do Rio Preto, 22 August: 66.3 µg/m³, 3.4× its usual 19.3 São José do Rio Preto, 23 August: 93.8 µg/m³, 4.9× its usual 19.3 São José do Rio Preto, 24 August: 134.8 µg/m³ São José do Rio Preto, 25 August: 7.0 µg/m³ São José do Rio Preto, 26 August: 11.0 µg/m³ São José do Rio Preto, 27 August: 12.9 µg/m³ São José do Rio Preto, 28 August: 22.6 µg/m³ Rio Claro Rio Claro, 19 August: 43.2 µg/m³ Rio Claro, 20 August: 49.9 µg/m³ Rio Claro, 21 August: 44.8 µg/m³ Rio Claro, 22 August: 57.0 µg/m³, 2.7× its usual 21.2 Rio Claro, 23 August: 59.2 µg/m³, 2.8× its usual 21.1 Rio Claro, 24 August: 27.5 µg/m³ Rio Claro, 25 August: 7.7 µg/m³ Rio Claro, 26 August: 8.4 µg/m³ Rio Claro, 27 August: 14.8 µg/m³ Rio Claro, 28 August: 20.3 µg/m³ Guaratinguetá Guaratinguetá, 19 August: 28.2 µg/m³ Guaratinguetá, 20 August: 34.8 µg/m³ Guaratinguetá, 21 August: 33.0 µg/m³ Guaratinguetá, 22 August: 49.6 µg/m³, 3.6× its usual 13.9 Guaratinguetá, 23 August: 36.1 µg/m³, 2.6× its usual 14.0 Guaratinguetá, 24 August: 7.1 µg/m³ Guaratinguetá, 25 August: 6.5 µg/m³ Guaratinguetá, 26 August: 4.2 µg/m³ Guaratinguetá, 27 August: 8.8 µg/m³ Guaratinguetá, 28 August: 10.6 µg/m³ Ferraz de Vasconcel… Ferraz de Vasconcelos, 19 August: 59.8 µg/m³ Ferraz de Vasconcelos, 20 August: 63.3 µg/m³ Ferraz de Vasconcelos, 21 August: 44.0 µg/m³ Ferraz de Vasconcelos, 22 August: 47.6 µg/m³, 2.8× its usual 17.2 Ferraz de Vasconcelos, 23 August: 36.2 µg/m³, 2.1× its usual 17.2 Ferraz de Vasconcelos, 24 August: 13.9 µg/m³ Ferraz de Vasconcelos, 25 August: 5.0 µg/m³ Ferraz de Vasconcelos, 26 August: 8.1 µg/m³ Ferraz de Vasconcelos, 27 August: 14.5 µg/m³ Ferraz de Vasconcelos, 28 August: 13.0 µg/m³ Ribeirão Preto Ribeirão Preto, 19 August: 57.4 µg/m³ Ribeirão Preto, 20 August: 47.8 µg/m³ Ribeirão Preto, 21 August: 43.5 µg/m³ Ribeirão Preto, 22 August: 46.7 µg/m³, 2.6× its usual 18.3 Ribeirão Preto, 23 August: 53.5 µg/m³, 2.9× its usual 18.4 Ribeirão Preto, 24 August: 245.7 µg/m³ Ribeirão Preto, 25 August: 181.5 µg/m³ Ribeirão Preto, 26 August: no reading Ribeirão Preto, 27 August: no reading Ribeirão Preto, 28 August: 25.3 µg/m³ Jundiaí Jundiaí, 19 August: no reading Jundiaí, 20 August: no reading Jundiaí, 21 August: 37.0 µg/m³ Jundiaí, 22 August: 45.7 µg/m³, 2.9× its usual 16.0 Jundiaí, 23 August: 52.4 µg/m³, 3.3× its usual 15.9 Jundiaí, 24 August: 17.8 µg/m³ Jundiaí, 25 August: 5.1 µg/m³ Jundiaí, 26 August: 10.9 µg/m³ Jundiaí, 27 August: 12.0 µg/m³ Jundiaí, 28 August: 16.5 µg/m³ Limeira Limeira, 19 August: 41.2 µg/m³ Limeira, 20 August: 44.7 µg/m³ Limeira, 21 August: 38.8 µg/m³ Limeira, 22 August: 43.8 µg/m³, 2.6× its usual 16.8 Limeira, 23 August: 50.6 µg/m³, 3.0× its usual 16.7 Limeira, 24 August: 31.6 µg/m³ Limeira, 25 August: 7.3 µg/m³ Limeira, 26 August: 8.5 µg/m³ Limeira, 27 August: 12.3 µg/m³ Limeira, 28 August: 16.8 µg/m³ Itaquaquecetuba Itaquaquecetuba, 19 August: 53.6 µg/m³ Itaquaquecetuba, 20 August: 69.8 µg/m³ Itaquaquecetuba, 21 August: 41.7 µg/m³ Itaquaquecetuba, 22 August: 42.7 µg/m³, 2.7× its usual 15.9 Itaquaquecetuba, 23 August: 37.9 µg/m³, 2.4× its usual 15.8 Itaquaquecetuba, 24 August: 12.9 µg/m³ Itaquaquecetuba, 25 August: 6.3 µg/m³ Itaquaquecetuba, 26 August: 8.8 µg/m³ Itaquaquecetuba, 27 August: 13.6 µg/m³ Itaquaquecetuba, 28 August: 13.6 µg/m³ Paulínia Paulínia, 19 August: 41.5 µg/m³ Paulínia, 20 August: 39.2 µg/m³ Paulínia, 21 August: 48.0 µg/m³ Paulínia, 22 August: 41.5 µg/m³, 2.6× its usual 16.0 Paulínia, 23 August: 59.8 µg/m³, 3.7× its usual 16.2 Paulínia, 24 August: 37.4 µg/m³ Paulínia, 25 August: 7.9 µg/m³ Paulínia, 26 August: 7.9 µg/m³ Paulínia, 27 August: 8.9 µg/m³ Paulínia, 28 August: 14.3 µg/m³ São Paulo São Paulo, 19 August: 52.6 µg/m³ São Paulo, 20 August: 47.9 µg/m³ São Paulo, 21 August: 37.6 µg/m³ São Paulo, 22 August: 41.3 µg/m³, 2.5× its usual 16.7 São Paulo, 23 August: 39.6 µg/m³, 2.4× its usual 16.6 São Paulo, 24 August: 11.1 µg/m³ São Paulo, 25 August: 3.8 µg/m³ São Paulo, 26 August: 8.8 µg/m³ São Paulo, 27 August: 14.3 µg/m³ São Paulo, 28 August: 16.6 µg/m³ Campinas Campinas, 19 August: 44.4 µg/m³ Campinas, 20 August: 44.4 µg/m³ Campinas, 21 August: 39.4 µg/m³ Campinas, 22 August: 40.8 µg/m³, 2.7× its usual 15.3 Campinas, 23 August: 55.0 µg/m³, 3.6× its usual 15.2 Campinas, 24 August: 27.6 µg/m³ Campinas, 25 August: 5.9 µg/m³ Campinas, 26 August: 17.2 µg/m³ Campinas, 27 August: 19.5 µg/m³ Campinas, 28 August: 24.5 µg/m³ Piracicaba Piracicaba, 19 August: 34.0 µg/m³ Piracicaba, 20 August: 37.7 µg/m³ Piracicaba, 21 August: 34.2 µg/m³ Piracicaba, 22 August: 40.4 µg/m³, 2.7× its usual 15.2 Piracicaba, 23 August: 42.6 µg/m³, 2.8× its usual 15.1 Piracicaba, 24 August: 23.1 µg/m³ Piracicaba, 25 August: 4.6 µg/m³ Piracicaba, 26 August: 5.6 µg/m³ Piracicaba, 27 August: 10.5 µg/m³ Piracicaba, 28 August: 16.5 µg/m³ Taubaté Taubaté, 19 August: 34.8 µg/m³ Taubaté, 20 August: 33.9 µg/m³ Taubaté, 21 August: 34.3 µg/m³ Taubaté, 22 August: 38.1 µg/m³, 2.9× its usual 13.0 Taubaté, 23 August: 40.4 µg/m³, 3.1× its usual 12.9 Taubaté, 24 August: 19.0 µg/m³ Taubaté, 25 August: 5.9 µg/m³ Taubaté, 26 August: 5.5 µg/m³ Taubaté, 27 August: 10.5 µg/m³ Taubaté, 28 August: 9.8 µg/m³ Santos Santos, 19 August: 40.7 µg/m³ Santos, 20 August: 24.9 µg/m³ Santos, 21 August: 25.8 µg/m³ Santos, 22 August: 33.8 µg/m³, 2.5× its usual 13.6 Santos, 23 August: 22.9 µg/m³ Santos, 24 August: 3.3 µg/m³ Santos, 25 August: 3.8 µg/m³ Santos, 26 August: 7.7 µg/m³ Santos, 27 August: 9.2 µg/m³ Santos, 28 August: 11.8 µg/m³ São José dos Campos São José dos Campos, 19 August: 40.5 µg/m³ São José dos Campos, 20 August: 36.8 µg/m³ São José dos Campos, 21 August: 32.2 µg/m³ São José dos Campos, 22 August: 33.7 µg/m³, 2.7× its usual 12.5 São José dos Campos, 23 August: 32.6 µg/m³, 2.7× its usual 12.3 São José dos Campos, 24 August: 10.8 µg/m³ São José dos Campos, 25 August: 3.9 µg/m³ São José dos Campos, 26 August: 4.5 µg/m³ São José dos Campos, 27 August: 7.3 µg/m³ São José dos Campos, 28 August: 10.8 µg/m³ Duque de Caxias Duque de Caxias, 19 August: no reading Duque de Caxias, 20 August: no reading Duque de Caxias, 21 August: no reading Duque de Caxias, 22 August: 28.9 µg/m³, 3.1× its usual 9.3 Duque de Caxias, 23 August: no reading Duque de Caxias, 24 August: no reading Duque de Caxias, 25 August: no reading Duque de Caxias, 26 August: no reading Duque de Caxias, 27 August: no reading Duque de Caxias, 28 August: no reading Rio de Janeiro Rio de Janeiro, 19 August: 25.1 µg/m³ Rio de Janeiro, 20 August: 31.8 µg/m³ Rio de Janeiro, 21 August: 23.6 µg/m³ Rio de Janeiro, 22 August: 28.8 µg/m³, 3.2× its usual 9.1 Rio de Janeiro, 23 August: 23.1 µg/m³ Rio de Janeiro, 24 August: 17.9 µg/m³ Rio de Janeiro, 25 August: 3.7 µg/m³ Rio de Janeiro, 26 August: 5.2 µg/m³ Rio de Janeiro, 27 August: 9.1 µg/m³ Rio de Janeiro, 28 August: 9.4 µg/m³ Santo André Santo André, 19 August: no reading Santo André, 20 August: no reading Santo André, 21 August: no reading Santo André, 22 August: no reading Santo André, 23 August: 45.4 µg/m³, 2.8× its usual 16.2 Santo André, 24 August: 16.9 µg/m³ Santo André, 25 August: 3.6 µg/m³ Santo André, 26 August: 12.9 µg/m³ Santo André, 27 August: 14.5 µg/m³ Santo André, 28 August: 18.8 µg/m³ Nova União Nova União, 19 August: 30.3 µg/m³ Nova União, 20 August: 28.1 µg/m³ Nova União, 21 August: 31.3 µg/m³ Nova União, 22 August: 20.1 µg/m³ Nova União, 23 August: 22.3 µg/m³ Nova União, 24 August: 41.7 µg/m³, 2.1× its usual 20.1 Nova União, 25 August: 35.5 µg/m³ Nova União, 26 August: 20.4 µg/m³ Nova União, 27 August: 13.4 µg/m³ Nova União, 28 August: 11.1 µg/m³ Congonhas Congonhas, 19 August: 34.6 µg/m³ Congonhas, 20 August: 37.0 µg/m³ Congonhas, 21 August: 33.7 µg/m³ Congonhas, 22 August: 26.0 µg/m³ Congonhas, 23 August: 25.6 µg/m³ Congonhas, 24 August: 32.7 µg/m³, 2.4× its usual 13.8 Congonhas, 25 August: 28.0 µg/m³, 2.0× its usual 13.8 Congonhas, 26 August: 9.3 µg/m³ Congonhas, 27 August: 10.3 µg/m³ Congonhas, 28 August: 14.8 µg/m³ Belo Horizonte Belo Horizonte, 19 August: 24.5 µg/m³ Belo Horizonte, 20 August: 20.2 µg/m³ Belo Horizonte, 21 August: 26.3 µg/m³ Belo Horizonte, 22 August: 18.5 µg/m³ Belo Horizonte, 23 August: 20.8 µg/m³ Belo Horizonte, 24 August: 31.5 µg/m³, 2.2× its usual 14.1 Belo Horizonte, 25 August: 34.6 µg/m³, 2.5× its usual 14.1 Belo Horizonte, 26 August: 19.7 µg/m³ Belo Horizonte, 27 August: 13.5 µg/m³ Belo Horizonte, 28 August: 9.4 µg/m³ Serra Serra, 19 August: 13.6 µg/m³ Serra, 20 August: 10.4 µg/m³ Serra, 21 August: 21.6 µg/m³ Serra, 22 August: 30.4 µg/m³ Serra, 23 August: 25.2 µg/m³ Serra, 24 August: 31.1 µg/m³, 2.4× its usual 13.2 Serra, 25 August: 31.0 µg/m³ Serra, 26 August: 9.2 µg/m³ Serra, 27 August: 4.9 µg/m³ Serra, 28 August: 5.9 µg/m³ Betim Betim, 19 August: 38.0 µg/m³ Betim, 20 August: 34.1 µg/m³ Betim, 21 August: 80.4 µg/m³ Betim, 22 August: 15.5 µg/m³ Betim, 23 August: 26.8 µg/m³ Betim, 24 August: 22.5 µg/m³ Betim, 25 August: 38.4 µg/m³, 2.6× its usual 14.7 Betim, 26 August: 11.9 µg/m³ Betim, 27 August: 7.8 µg/m³ Betim, 28 August: 8.3 µg/m³ Ibirité Ibirité, 19 August: 17.7 µg/m³ Ibirité, 20 August: 16.6 µg/m³ Ibirité, 21 August: 23.9 µg/m³ Ibirité, 22 August: 14.3 µg/m³ Ibirité, 23 August: 23.2 µg/m³ Ibirité, 24 August: 24.9 µg/m³ Ibirité, 25 August: 30.3 µg/m³, 2.9× its usual 10.5 Ibirité, 26 August: 16.8 µg/m³ Ibirité, 27 August: 14.9 µg/m³ Ibirité, 28 August: 12.6 µg/m³ 19 Aug 20 21 22 23 24 25 26 27 28 Every counted city, in the order the episode reached them, 3 days before to 3 after. Each square is a day, coloured by that day's PM2.5; outlined: at twice the city's usual or more. Good 0–50
Moderate 51–100
Unhealthy for sensitive groups 101–150
Unhealthy 151–200
Very unhealthy 201–300
Hazardous 301+
Every city it reached
City Days Highest Usual Above usual
São José do Rio Preto São Paulo, Brazil 2 23 August 19.3 4.9× Paulínia São Paulo, Brazil 2 23 August 16.2 3.7× Campinas São Paulo, Brazil 2 23 August 15.2 3.6× Guaratinguetá São Paulo, Brazil 2 22 August 13.9 3.6× Jundiaí São Paulo, Brazil 2 23 August 15.9 3.3× Rio de Janeiro Rio de Janeiro, Brazil 1 22 August 9.1 3.2× Taubaté São Paulo, Brazil 2 23 August 12.9 3.1× Duque de Caxias Rio de Janeiro, Brazil 1 22 August 9.3 3.1× Limeira São Paulo, Brazil 2 23 August 16.7 3.0× Ribeirão Preto São Paulo, Brazil 2 23 August 18.4 2.9× Ibirité Minas Gerais, Brazil 1 25 August 10.5 2.9× Rio Claro São Paulo, Brazil 2 23 August 21.1 2.8× Ferraz de Vasconcelos São Paulo, Brazil 2 22 August 17.2 2.8× Santo André São Paulo, Brazil 1 23 August 16.2 2.8× Piracicaba São Paulo, Brazil 2 23 August 15.1 2.8× Itaquaquecetuba São Paulo, Brazil 2 22 August 15.9 2.7× São José dos Campos São Paulo, Brazil 2 22 August 12.5 2.7× Betim Minas Gerais, Brazil 1 25 August 14.7 2.6× São Paulo São Paulo, Brazil 2 22 August 16.7 2.5× Belo Horizonte Minas Gerais, Brazil 2 25 August 14.1 2.5× Santos São Paulo, Brazil 1 22 August 13.6 2.5× Congonhas Minas Gerais, Brazil 2 24 August 13.8 2.4× Serra Espírito Santo, Brazil 1 24 August 13.2 2.4× Nova União Minas Gerais, Brazil 1 24 August 20.1 2.1×
Daily means in µg/m³, over the days each city counted in this episode. Highest: its highest of those days. Usual: the city's median for the time of year of that day (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that, with a usual under 5 µg/m³ taken as 5.
Against other episodes in Brazil
Number 6 of 20 episodes in Brazil since our records began, by cities reached.
Southern Brazil, 7 to 17 September 2024 31 Southern Brazil, 30 August to 5 September 2024 31 Southern Brazil, 22 to 28 September 2024 28 Southern Brazil, 15 to 22 August 2024 27 Southern Brazil, 30 September to 4 October 2024 26 Southern Brazil, 22 to 25 August 2024 24 São Paulo and Paraná, Brazil, October 2024 13 Southern Brazil, July 2025 11 Southern Brazil, 25 to 28 July 2024 11 São Paulo, Minas Gerais and Rio de Janeiro, Brazil, June 2024 11 Southern Brazil, 11 to 13 June 2024 11 Southern Brazil, 7 to 8 June 2024 10 Bars: cities reached; colour: the level of the episode's highest daily reading. All 20 .
Use this page SmogRank, Southern Brazil, 22 to 25 August 2024: 24 cities with PM2.5 at twice their usual or more, 22 to 25 August 2024, smogrank.com/episodes/2024-08-22-southern-brazil (accessed 13 October 2026).
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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms .
An episode is a run of days when many cities close to each other (four or more within 350 km on a day, 8 or more in all) each had a daily PM2.5 mean of at least 25 µg/m³ and at least 2 times their usual for that time of year. Found in our own measurements, not picked by hand. How we find episodes . Values are each city's daily mean of its own monitors; causes are the usual kinds for a pattern like this, not a confirmed source. Fire detections from NASA FIRMS; smoke maps from NOAA HMS. Dust: contains modified Copernicus Atmosphere Monitoring Service information 2024. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.
