On Monday (12), the air quality in the capital is considered “very bad” according to the Electronic Environmental Surveillance System (Selva).
To be considered of good quality, the air must measure between 0 and 25 μm/m³ (micrometers per cubic meter of air).
In Manaus, according to the surveillance system, the most affected area is the Morro da Liberdade neighborhood, which recorded pollution levels of 94.6 µg/m³.
According to the State Secretariat for the Environment (Sema), the main cause of the phenomenon is the wildfires that occur in the South of Amazonas and neighboring states.
The State Civil Defense reported that a cold front arrived in the south of the state and changed the wind route, carrying the smoke from the wildfires to the metropolitan region.
The dense smoke haze began last Saturday (10).
On Sunday (11), the smoke once again covered the entire city.
In the early afternoon, the Vila Buriti neighborhood, in the South Zone of Manaus, had an air quality of 116.2 μm/m³.
The problem extends to other municipalities in Amazonas, especially Apui, Lábrea and Novo Aripuanã, all located in the south of the state, in the region known as the 'arc of fire'.
In July, residents of these locations were already suffering from air quality due to the intense fires that occur daily during this period.

Source: Amazon Agency