SmogRank / Episodes / Brazil
Southern Brazil, 22 to 28 September 2024
For 7 days, from 22 to 28 September 2024, 28 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: 71.0 µg/m³ on 27 September, about 3.9× its usual 18.2. Ended 28 September.
Likely smoke from fires Fires were detected within 300 km of the city on 63% of the counted city-days. Satellites see crop, field and forest fires alike, so this doesn't say which burned.
Cities reached 28 in 1 country
Days 7 22 to 28 September 2024
Worst day 24 September 20 cities counted
Furthest above usual 4.8× Bauru
Day by day
Play 24 September 20 cities at twice their usual or more
Santos Barra Longa Conceição do Mato Dentro Timóteo Ipatinga Coronel Fabriciano Taubaté Limeira Ibirité Piracicaba Nova União Betim Congonhas Belo Horizonte São Paulo São José dos Campos Ferraz de Vasconcelos Campinas Araucária Itabira Rio Claro Paulínia Jundiaí Guaratinguetá São José do Rio Preto Duque de Caxias Itaquaquecetuba Santo André Rio de Janeiro Ribeirão Preto Presidente Prudente Curitiba Bauru No fire and smoke map for this day.
19 Sep 20 21 22 23 24 25 26 27 28 29 30 1 Oct 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 4 of the 13 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
Ribeirão Preto Ribeirão Preto, 19 September: 59.0 µg/m³ Ribeirão Preto, 20 September: 54.9 µg/m³ Ribeirão Preto, 21 September: 39.4 µg/m³ Ribeirão Preto, 22 September: 46.1 µg/m³, 2.8× its usual 16.3 Ribeirão Preto, 23 September: 43.0 µg/m³, 2.7× its usual 16.2 Ribeirão Preto, 24 September: 41.8 µg/m³, 2.6× its usual 16.2 Ribeirão Preto, 25 September: 36.4 µg/m³, 2.2× its usual 16.2 Ribeirão Preto, 26 September: 48.9 µg/m³, 3.0× its usual 16.2 Ribeirão Preto, 27 September: 70.5 µg/m³, 4.4× its usual 16.2 Ribeirão Preto, 28 September: 30.4 µg/m³ Ribeirão Preto, 29 September: 22.8 µg/m³ Ribeirão Preto, 30 September: 25.7 µg/m³ Ribeirão Preto, 1 October: 40.7 µg/m³ São José do Rio Pre… São José do Rio Preto, 19 September: 35.0 µg/m³ São José do Rio Preto, 20 September: 52.3 µg/m³ São José do Rio Preto, 21 September: 21.8 µg/m³ São José do Rio Preto, 22 September: 40.3 µg/m³, 2.2× its usual 18.7 São José do Rio Preto, 23 September: 58.4 µg/m³, 3.2× its usual 18.5 São José do Rio Preto, 24 September: 52.8 µg/m³, 2.9× its usual 18.5 São José do Rio Preto, 25 September: 44.9 µg/m³, 2.5× its usual 18.3 São José do Rio Preto, 26 September: 48.2 µg/m³, 2.6× its usual 18.3 São José do Rio Preto, 27 September: 71.0 µg/m³, 3.9× its usual 18.2 São José do Rio Preto, 28 September: 27.5 µg/m³ São José do Rio Preto, 29 September: 30.6 µg/m³ São José do Rio Preto, 30 September: 41.8 µg/m³ São José do Rio Preto, 1 October: 32.2 µg/m³ Bauru Bauru, 19 September: 20.7 µg/m³ Bauru, 20 September: 28.4 µg/m³ Bauru, 21 September: 12.7 µg/m³ Bauru, 22 September: 29.8 µg/m³, 2.4× its usual 12.4 Bauru, 23 September: 38.4 µg/m³, 3.1× its usual 12.4 Bauru, 24 September: 35.3 µg/m³, 2.8× its usual 12.4 Bauru, 25 September: 45.2 µg/m³, 3.7× its usual 12.2 Bauru, 26 September: 58.2 µg/m³, 4.8× its usual 12.2 Bauru, 27 September: 32.7 µg/m³, 2.7× its usual 12.3 Bauru, 28 September: 10.8 µg/m³ Bauru, 29 September: 20.7 µg/m³ Bauru, 30 September: 23.5 µg/m³ Bauru, 1 October: 37.8 µg/m³ Santo André Santo André, 19 September: 20.2 µg/m³ Santo André, 20 September: 23.3 µg/m³ Santo André, 21 September: 19.1 µg/m³ Santo André, 22 September: 28.6 µg/m³, 2.2× its usual 12.8 Santo André, 23 September: 35.2 µg/m³, 2.9× its usual 12.2 Santo André, 24 September: 38.8 µg/m³, 3.2× its usual 12.2 Santo André, 25 September: 50.9 µg/m³, 4.2× its usual 12.2 Santo André, 26 September: 44.5 µg/m³, 3.6× its usual 12.2 Santo André, 27 September: 17.3 µg/m³ Santo André, 28 September: 8.2 µg/m³ Santo André, 29 September: 11.3 µg/m³ Santo André, 30 September: 24.0 µg/m³ Santo André, 1 October: 34.1 µg/m³ Rio Claro Rio Claro, 19 September: 28.0 µg/m³ Rio Claro, 20 September: 31.4 µg/m³ Rio Claro, 21 September: 18.0 µg/m³ Rio Claro, 22 September: 28.0 µg/m³ Rio Claro, 23 September: 52.2 µg/m³, 2.9× its usual 18.1 Rio Claro, 24 September: 50.5 µg/m³, 2.8× its usual 17.8 Rio Claro, 25 September: 54.2 µg/m³, 3.0× its usual 17.8 Rio Claro, 26 September: 55.8 µg/m³, 3.2× its usual 17.4 Rio Claro, 27 September: 34.8 µg/m³ Rio Claro, 28 September: 19.9 µg/m³ Rio Claro, 29 September: 24.0 µg/m³ Rio Claro, 30 September: 34.5 µg/m³ Rio Claro, 1 October: 45.6 µg/m³ Presidente Prudente Presidente Prudente, 19 September: 20.0 µg/m³ Presidente Prudente, 20 September: 24.1 µg/m³ Presidente Prudente, 21 September: 17.2 µg/m³ Presidente Prudente, 22 September: 17.6 µg/m³ Presidente Prudente, 23 September: 43.9 µg/m³, 4.6× its usual 9.6 Presidente Prudente, 24 September: 35.0 µg/m³, 3.5× its usual 9.9 Presidente Prudente, 25 September: 33.5 µg/m³, 3.3× its usual 10.2 Presidente Prudente, 26 September: 48.5 µg/m³, 4.7× its usual 10.3 Presidente Prudente, 27 September: 18.7 µg/m³ Presidente Prudente, 28 September: 9.7 µg/m³ Presidente Prudente, 29 September: 20.5 µg/m³ Presidente Prudente, 30 September: 24.6 µg/m³ Presidente Prudente, 1 October: 33.3 µg/m³ Limeira Limeira, 19 September: 26.2 µg/m³ Limeira, 20 September: 27.6 µg/m³ Limeira, 21 September: no reading Limeira, 22 September: no reading Limeira, 23 September: 39.9 µg/m³, 2.5× its usual 15.7 Limeira, 24 September: 38.2 µg/m³, 2.5× its usual 15.3 Limeira, 25 September: 37.9 µg/m³, 2.5× its usual 15.4 Limeira, 26 September: 37.3 µg/m³, 2.4× its usual 15.3 Limeira, 27 September: 29.6 µg/m³ Limeira, 28 September: 12.5 µg/m³ Limeira, 29 September: 21.9 µg/m³ Limeira, 30 September: 26.0 µg/m³ Limeira, 1 October: 36.3 µg/m³ São Paulo São Paulo, 19 September: 21.0 µg/m³ São Paulo, 20 September: 25.9 µg/m³ São Paulo, 21 September: 15.6 µg/m³ São Paulo, 22 September: 24.6 µg/m³ São Paulo, 23 September: 36.3 µg/m³, 2.5× its usual 14.5 São Paulo, 24 September: 35.1 µg/m³, 2.5× its usual 14.2 São Paulo, 25 September: 35.8 µg/m³, 2.5× its usual 14.5 São Paulo, 26 September: 39.6 µg/m³, 2.8× its usual 14.0 São Paulo, 27 September: 20.7 µg/m³ São Paulo, 28 September: 8.7 µg/m³ São Paulo, 29 September: 14.0 µg/m³ São Paulo, 30 September: 25.7 µg/m³ São Paulo, 1 October: 32.1 µg/m³ Piracicaba Piracicaba, 19 September: 21.6 µg/m³ Piracicaba, 20 September: 25.0 µg/m³ Piracicaba, 21 September: 15.0 µg/m³ Piracicaba, 22 September: 24.3 µg/m³ Piracicaba, 23 September: 34.2 µg/m³, 2.5× its usual 13.7 Piracicaba, 24 September: 33.4 µg/m³, 2.5× its usual 13.5 Piracicaba, 25 September: 34.8 µg/m³, 2.6× its usual 13.5 Piracicaba, 26 September: 35.2 µg/m³, 2.6× its usual 13.4 Piracicaba, 27 September: 28.7 µg/m³, 2.1× its usual 13.4 Piracicaba, 28 September: 12.4 µg/m³ Piracicaba, 29 September: 20.8 µg/m³ Piracicaba, 30 September: 25.3 µg/m³ Piracicaba, 1 October: 33.7 µg/m³ Curitiba Curitiba, 19 September: 6.8 µg/m³ Curitiba, 20 September: 11.7 µg/m³ Curitiba, 21 September: 14.8 µg/m³ Curitiba, 22 September: 23.7 µg/m³ Curitiba, 23 September: 33.5 µg/m³, 3.7× its usual 9.0 Curitiba, 24 September: 34.9 µg/m³, 4.2× its usual 8.4 Curitiba, 25 September: 39.6 µg/m³, 4.8× its usual 8.2 Curitiba, 26 September: 32.1 µg/m³, 3.9× its usual 8.2 Curitiba, 27 September: 16.4 µg/m³ Curitiba, 28 September: 6.1 µg/m³ Curitiba, 29 September: 7.2 µg/m³ Curitiba, 30 September: 17.1 µg/m³ Curitiba, 1 October: 28.7 µg/m³ Jundiaí Jundiaí, 19 September: 20.4 µg/m³ Jundiaí, 20 September: 22.7 µg/m³ Jundiaí, 21 September: 15.0 µg/m³ Jundiaí, 22 September: 23.7 µg/m³ Jundiaí, 23 September: 33.4 µg/m³, 2.5× its usual 13.5 Jundiaí, 24 September: 34.8 µg/m³, 2.6× its usual 13.3 Jundiaí, 25 September: 32.0 µg/m³, 2.4× its usual 13.4 Jundiaí, 26 September: 45.5 µg/m³, 3.4× its usual 13.3 Jundiaí, 27 September: 29.6 µg/m³, 2.2× its usual 13.3 Jundiaí, 28 September: 11.0 µg/m³ Jundiaí, 29 September: 17.5 µg/m³ Jundiaí, 30 September: 25.0 µg/m³ Jundiaí, 1 October: 29.5 µg/m³ Paulínia Paulínia, 19 September: 28.0 µg/m³ Paulínia, 20 September: 23.9 µg/m³ Paulínia, 21 September: 13.6 µg/m³ Paulínia, 22 September: 24.4 µg/m³ Paulínia, 23 September: 33.3 µg/m³, 2.3× its usual 14.3 Paulínia, 24 September: 33.0 µg/m³, 2.4× its usual 13.7 Paulínia, 25 September: 33.7 µg/m³, 2.4× its usual 14.0 Paulínia, 26 September: 45.3 µg/m³, 3.3× its usual 13.7 Paulínia, 27 September: 27.7 µg/m³, 2.0× its usual 13.7 Paulínia, 28 September: 11.7 µg/m³ Paulínia, 29 September: 21.6 µg/m³ Paulínia, 30 September: 30.0 µg/m³ Paulínia, 1 October: 40.4 µg/m³ Ferraz de Vasconcel… Ferraz de Vasconcelos, 19 September: 20.7 µg/m³ Ferraz de Vasconcelos, 20 September: 22.0 µg/m³ Ferraz de Vasconcelos, 21 September: 19.5 µg/m³ Ferraz de Vasconcelos, 22 September: 23.1 µg/m³ Ferraz de Vasconcelos, 23 September: 33.2 µg/m³, 2.6× its usual 12.8 Ferraz de Vasconcelos, 24 September: 37.9 µg/m³, 3.0× its usual 12.6 Ferraz de Vasconcelos, 25 September: 34.0 µg/m³, 2.7× its usual 12.4 Ferraz de Vasconcelos, 26 September: no reading Ferraz de Vasconcelos, 27 September: 23.0 µg/m³ Ferraz de Vasconcelos, 28 September: 6.0 µg/m³ Ferraz de Vasconcelos, 29 September: 12.8 µg/m³ Ferraz de Vasconcelos, 30 September: 23.3 µg/m³ Ferraz de Vasconcelos, 1 October: 31.6 µg/m³ Campinas Campinas, 19 September: 28.8 µg/m³ Campinas, 20 September: 26.0 µg/m³ Campinas, 21 September: 14.0 µg/m³ Campinas, 22 September: 25.4 µg/m³ Campinas, 23 September: 32.6 µg/m³, 2.5× its usual 12.9 Campinas, 24 September: 36.1 µg/m³, 2.8× its usual 12.8 Campinas, 25 September: 33.6 µg/m³, 2.6× its usual 13.0 Campinas, 26 September: 39.3 µg/m³, 3.1× its usual 12.8 Campinas, 27 September: 25.8 µg/m³, 2.0× its usual 12.8 Campinas, 28 September: 11.6 µg/m³ Campinas, 29 September: 18.3 µg/m³ Campinas, 30 September: 28.0 µg/m³ Campinas, 1 October: 34.0 µg/m³ Araucária Araucária, 19 September: 10.3 µg/m³ Araucária, 20 September: 12.1 µg/m³ Araucária, 21 September: 16.5 µg/m³ Araucária, 22 September: 23.9 µg/m³ Araucária, 23 September: 32.1 µg/m³, 2.7× its usual 12.0 Araucária, 24 September: 38.7 µg/m³, 3.2× its usual 12.0 Araucária, 25 September: 36.4 µg/m³, 3.0× its usual 12.0 Araucária, 26 September: 33.0 µg/m³, 2.8× its usual 11.8 Araucária, 27 September: 17.6 µg/m³ Araucária, 28 September: 11.1 µg/m³ Araucária, 29 September: 14.5 µg/m³ Araucária, 30 September: 20.9 µg/m³ Araucária, 1 October: 26.6 µg/m³ Itaquaquecetuba Itaquaquecetuba, 19 September: 20.2 µg/m³ Itaquaquecetuba, 20 September: 22.5 µg/m³ Itaquaquecetuba, 21 September: 18.0 µg/m³ Itaquaquecetuba, 22 September: 17.6 µg/m³ Itaquaquecetuba, 23 September: 32.0 µg/m³, 2.5× its usual 12.9 Itaquaquecetuba, 24 September: 38.1 µg/m³, 3.1× its usual 12.3 Itaquaquecetuba, 25 September: 36.0 µg/m³, 3.0× its usual 12.1 Itaquaquecetuba, 26 September: 46.5 µg/m³, 4.2× its usual 11.2 Itaquaquecetuba, 27 September: 27.9 µg/m³, 2.5× its usual 11.1 Itaquaquecetuba, 28 September: 7.8 µg/m³ Itaquaquecetuba, 29 September: 11.6 µg/m³ Itaquaquecetuba, 30 September: 21.0 µg/m³ Itaquaquecetuba, 1 October: 34.3 µg/m³ Rio de Janeiro Rio de Janeiro, 19 September: 10.5 µg/m³ Rio de Janeiro, 20 September: 14.9 µg/m³ Rio de Janeiro, 21 September: 21.1 µg/m³ Rio de Janeiro, 22 September: 21.5 µg/m³ Rio de Janeiro, 23 September: 31.4 µg/m³, 4.3× its usual 7.3 Rio de Janeiro, 24 September: 25.8 µg/m³, 3.5× its usual 7.4 Rio de Janeiro, 25 September: 22.0 µg/m³ Rio de Janeiro, 26 September: 26.4 µg/m³, 3.6× its usual 7.3 Rio de Janeiro, 27 September: 29.3 µg/m³, 4.1× its usual 7.2 Rio de Janeiro, 28 September: 5.8 µg/m³ Rio de Janeiro, 29 September: 7.8 µg/m³ Rio de Janeiro, 30 September: 12.1 µg/m³ Rio de Janeiro, 1 October: 13.0 µg/m³ Duque de Caxias Duque de Caxias, 19 September: no reading Duque de Caxias, 20 September: no reading Duque de Caxias, 21 September: no reading Duque de Caxias, 22 September: no reading Duque de Caxias, 23 September: 30.3 µg/m³, 4.2× its usual 7.3 Duque de Caxias, 24 September: no reading Duque de Caxias, 25 September: no reading Duque de Caxias, 26 September: no reading Duque de Caxias, 27 September: no reading Duque de Caxias, 28 September: 6.5 µg/m³ Duque de Caxias, 29 September: 6.7 µg/m³ Duque de Caxias, 30 September: no reading Duque de Caxias, 1 October: no reading Guaratinguetá Guaratinguetá, 19 September: 12.7 µg/m³ Guaratinguetá, 20 September: 22.5 µg/m³ Guaratinguetá, 21 September: 18.9 µg/m³ Guaratinguetá, 22 September: 15.5 µg/m³ Guaratinguetá, 23 September: 19.9 µg/m³ Guaratinguetá, 24 September: 27.4 µg/m³, 2.7× its usual 10.0 Guaratinguetá, 25 September: 26.9 µg/m³, 2.6× its usual 10.2 Guaratinguetá, 26 September: 25.1 µg/m³, 2.5× its usual 10.0 Guaratinguetá, 27 September: 38.4 µg/m³, 3.8× its usual 10.2 Guaratinguetá, 28 September: 6.6 µg/m³ Guaratinguetá, 29 September: 13.0 µg/m³ Guaratinguetá, 30 September: 17.2 µg/m³ Guaratinguetá, 1 October: 18.2 µg/m³ São José dos Campos São José dos Campos, 19 September: 13.9 µg/m³ São José dos Campos, 20 September: 21.5 µg/m³ São José dos Campos, 21 September: 16.9 µg/m³ São José dos Campos, 22 September: 18.5 µg/m³ São José dos Campos, 23 September: 20.2 µg/m³ São José dos Campos, 24 September: 26.6 µg/m³, 2.7× its usual 10.0 São José dos Campos, 25 September: 28.1 µg/m³, 2.8× its usual 10.0 São José dos Campos, 26 September: 29.5 µg/m³, 3.0× its usual 9.8 São José dos Campos, 27 September: 23.8 µg/m³ São José dos Campos, 28 September: 5.3 µg/m³ São José dos Campos, 29 September: 9.8 µg/m³ São José dos Campos, 30 September: 16.0 µg/m³ São José dos Campos, 1 October: 25.6 µg/m³ Taubaté Taubaté, 19 September: 14.5 µg/m³ Taubaté, 20 September: 25.0 µg/m³ Taubaté, 21 September: 17.8 µg/m³ Taubaté, 22 September: 17.1 µg/m³ Taubaté, 23 September: 21.2 µg/m³ Taubaté, 24 September: 26.1 µg/m³, 2.4× its usual 10.8 Taubaté, 25 September: no reading Taubaté, 26 September: no reading Taubaté, 27 September: no reading Taubaté, 28 September: no reading Taubaté, 29 September: no reading Taubaté, 30 September: no reading Taubaté, 1 October: no reading Congonhas Congonhas, 19 September: 22.3 µg/m³ Congonhas, 20 September: 35.4 µg/m³ Congonhas, 21 September: 33.0 µg/m³ Congonhas, 22 September: 15.1 µg/m³ Congonhas, 23 September: no reading Congonhas, 24 September: no reading Congonhas, 25 September: 29.3 µg/m³, 2.3× its usual 12.5 Congonhas, 26 September: no reading Congonhas, 27 September: 29.6 µg/m³, 2.4× its usual 12.5 Congonhas, 28 September: 34.6 µg/m³, 2.8× its usual 12.5 Congonhas, 29 September: 16.3 µg/m³ Congonhas, 30 September: 17.6 µg/m³ Congonhas, 1 October: 23.1 µg/m³ Coronel Fabriciano Coronel Fabriciano, 19 September: 15.4 µg/m³ Coronel Fabriciano, 20 September: 15.2 µg/m³ Coronel Fabriciano, 21 September: 27.5 µg/m³ Coronel Fabriciano, 22 September: 18.8 µg/m³ Coronel Fabriciano, 23 September: no reading Coronel Fabriciano, 24 September: no reading Coronel Fabriciano, 25 September: 28.1 µg/m³, 2.3× its usual 12.4 Coronel Fabriciano, 26 September: no reading Coronel Fabriciano, 27 September: 25.2 µg/m³, 2.0× its usual 12.4 Coronel Fabriciano, 28 September: 20.5 µg/m³ Coronel Fabriciano, 29 September: 12.9 µg/m³ Coronel Fabriciano, 30 September: 11.3 µg/m³ Coronel Fabriciano, 1 October: 10.3 µg/m³ Nova União Nova União, 19 September: 18.4 µg/m³ Nova União, 20 September: 26.0 µg/m³ Nova União, 21 September: 32.2 µg/m³ Nova União, 22 September: 20.1 µg/m³ Nova União, 23 September: no reading Nova União, 24 September: no reading Nova União, 25 September: 22.9 µg/m³ Nova União, 26 September: no reading Nova União, 27 September: 38.7 µg/m³, 2.5× its usual 15.6 Nova União, 28 September: 40.8 µg/m³, 2.6× its usual 15.4 Nova União, 29 September: 16.2 µg/m³ Nova União, 30 September: 8.0 µg/m³ Nova União, 1 October: 13.7 µg/m³ Belo Horizonte Belo Horizonte, 19 September: 23.7 µg/m³ Belo Horizonte, 20 September: 23.1 µg/m³ Belo Horizonte, 21 September: 26.4 µg/m³ Belo Horizonte, 22 September: 22.6 µg/m³ Belo Horizonte, 23 September: no reading Belo Horizonte, 24 September: no reading Belo Horizonte, 25 September: 24.3 µg/m³ Belo Horizonte, 26 September: no reading Belo Horizonte, 27 September: 36.0 µg/m³, 2.8× its usual 12.8 Belo Horizonte, 28 September: 35.9 µg/m³, 2.8× its usual 12.8 Belo Horizonte, 29 September: 21.3 µg/m³ Belo Horizonte, 30 September: 16.8 µg/m³ Belo Horizonte, 1 October: 12.4 µg/m³ Ibirité Ibirité, 19 September: 14.7 µg/m³ Ibirité, 20 September: no reading Ibirité, 21 September: no reading Ibirité, 22 September: 23.6 µg/m³ Ibirité, 23 September: no reading Ibirité, 24 September: no reading Ibirité, 25 September: 23.6 µg/m³ Ibirité, 26 September: no reading Ibirité, 27 September: 30.9 µg/m³, 2.6× its usual 11.7 Ibirité, 28 September: 24.6 µg/m³ Ibirité, 29 September: 15.1 µg/m³ Ibirité, 30 September: 19.6 µg/m³ Ibirité, 1 October: 11.1 µg/m³ Itabira Itabira, 19 September: 21.0 µg/m³ Itabira, 20 September: 23.9 µg/m³ Itabira, 21 September: 26.7 µg/m³ Itabira, 22 September: 20.6 µg/m³ Itabira, 23 September: no reading Itabira, 24 September: no reading Itabira, 25 September: 20.2 µg/m³ Itabira, 26 September: no reading Itabira, 27 September: 29.6 µg/m³, 2.3× its usual 12.7 Itabira, 28 September: 40.5 µg/m³, 3.2× its usual 12.7 Itabira, 29 September: 16.1 µg/m³ Itabira, 30 September: 11.2 µg/m³ Itabira, 1 October: 12.8 µg/m³ Betim Betim, 19 September: 18.8 µg/m³ Betim, 20 September: 19.2 µg/m³ Betim, 21 September: no reading Betim, 22 September: 17.3 µg/m³ Betim, 23 September: no reading Betim, 24 September: no reading Betim, 25 September: 13.4 µg/m³ Betim, 26 September: no reading Betim, 27 September: 25.9 µg/m³ Betim, 28 September: 35.3 µg/m³, 2.7× its usual 13.2 Betim, 29 September: 15.0 µg/m³ Betim, 30 September: 7.6 µg/m³ Betim, 1 October: 8.4 µg/m³ 19 Sep 21 23 25 27 29 1 Oct 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
Sensitive groups 101–150
Unhealthy 151–200
Very unhealthy 201–300
Hazardous 301+
Every city it reached
City Days Highest Usual Above usual
Bauru São Paulo, Brazil 6 26 September 12.2 4.8× Curitiba Paraná, Brazil 4 25 September 8.2 4.8× Presidente Prudente São Paulo, Brazil 4 26 September 10.3 4.7× Ribeirão Preto São Paulo, Brazil 6 27 September 16.2 4.4× Rio de Janeiro Rio de Janeiro, Brazil 4 23 September 7.3 4.3× Santo André São Paulo, Brazil 5 25 September 12.2 4.2× Itaquaquecetuba São Paulo, Brazil 5 26 September 11.2 4.2× Duque de Caxias Rio de Janeiro, Brazil 1 23 September 7.3 4.2× São José do Rio Preto São Paulo, Brazil 6 27 September 18.2 3.9× Guaratinguetá São Paulo, Brazil 4 27 September 10.2 3.8× Jundiaí São Paulo, Brazil 5 26 September 13.3 3.4× Paulínia São Paulo, Brazil 5 26 September 13.7 3.3× Rio Claro São Paulo, Brazil 4 26 September 17.4 3.2× Itabira Minas Gerais, Brazil 2 28 September 12.7 3.2× Araucária Paraná, Brazil 4 24 September 12.0 3.2× Campinas São Paulo, Brazil 5 26 September 12.8 3.1× Ferraz de Vasconcelos São Paulo, Brazil 3 24 September 12.6 3.0× São José dos Campos São Paulo, Brazil 3 26 September 9.8 3.0× São Paulo São Paulo, Brazil 4 26 September 14.0 2.8× Belo Horizonte Minas Gerais, Brazil 2 27 September 12.8 2.8× Congonhas Minas Gerais, Brazil 3 28 September 12.5 2.8× Betim Minas Gerais, Brazil 1 28 September 13.2 2.7× Nova União Minas Gerais, Brazil 2 28 September 15.4 2.6× Piracicaba São Paulo, Brazil 5 26 September 13.4 2.6× Ibirité Minas Gerais, Brazil 1 27 September 11.7 2.6× Limeira São Paulo, Brazil 4 23 September 15.7 2.5× Taubaté São Paulo, Brazil 1 24 September 10.8 2.4× Coronel Fabriciano Minas Gerais, Brazil 2 25 September 12.4 2.3×
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 3 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 28 September 2024: 28 cities with PM2.5 at twice their usual or more, 22 to 28 September 2024, smogrank.com/episodes/2024-09-22-southern-brazil (accessed 13 October 2026).
Share Copy citation Download top 10 (PNG)
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.
