SmogRank / Episodes / Brazil / 2024
Bad-air episodes in Brazil, 2024
In 2024 there were 16 episodes in Brazil: times when many cities there had air at least twice as dirty as their usual for the time of year on the same days. The largest reached 31 cities: Southern Brazil, 7 to 17 September 2024.
Southern Brazil, 7 to 17 September 2024
11 days. 31 cities; highest daily mean 93 µg/m³ in Ribeirão Preto.
Each bar is an episode: as long as it lasted, as thick as the number of cities it counted, coloured by its highest daily mean. A lane is a part of the world; an episode sits in the lane of the country with most of its cities. Point at a bar or tap one to read it; the years open each year's list.
2024
- São Paulo and Paraná, Brazil, October 20248 to 11 October 2024, 4 days13 cities61 µg/m³peak, Ribeirão Preto
- Minas Gerais, Brazil, October 20249 October 2024, 1 day8 cities54 µg/m³peak, Belo Horizonte
- Southern Brazil, 30 September to 4 October 20245 days26 cities54 µg/m³peak, Ribeirão Preto
- Southern Brazil, 22 to 28 September 20247 days28 cities71 µg/m³peak, São José do Rio Preto
- São Paulo and Minas Gerais, Brazil, September 202420 to 21 September 2024, 2 days8 cities55 µg/m³peak, Ribeirão Preto
- Southern Brazil, 7 to 17 September 202411 days31 cities93 µg/m³peak, Ribeirão Preto
- Southern Brazil, 30 August to 5 September 20247 days31 cities106 µg/m³peak, Ribeirão Preto
- Southern Brazil, 22 to 25 August 20244 days24 cities94 µg/m³peak, São José do Rio Preto
- Southern Brazil, 15 to 22 August 20248 days27 cities80 µg/m³peak, Betim
- Southern Brazil, 25 to 28 July 20244 days11 cities49 µg/m³peak, Rio de Janeiro
- Southern Brazil, 4 to 5 July 20242 days9 cities44 µg/m³peak, Ferraz de Vasconcelos
- São Paulo, Minas Gerais and Rio de Janeiro, Brazil, June 202427 to 29 June 2024, 3 days11 cities39 µg/m³peak, Jundiaí
- Southern Brazil, 20 to 22 June 20243 days8 cities90 µg/m³peak, Betim
- Southern Brazil, 11 to 13 June 20243 days11 cities43 µg/m³peak, Curitiba
- Southern Brazil, 7 to 8 June 20242 days10 cities46 µg/m³peak, Curitiba
- São Paulo, Brazil, April 202423 to 24 April 2024, 2 days8 cities41 µg/m³peak, Rio Claro
Each row: one bar per day, as tall as the number of cities counted that day and coloured by their median level; the number of cities; the highest daily reading and where. 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.