Worst air pollution Congonhas, today and tomorrow
Today (9 August): Air quality in Congonhas is fair. AQI and PM2.5 are fair; PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (PM2.5: 31.3/100).
Tomorrow (10 August 2026): Air quality in Congonhas is medium. AQI improves to medium; PM2.5 decreases to medium; all other pollutants stay as today. Pollution peaks around 2:00 PM (PM2.5: 40.2/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Congonhas's air quality reflects the Minas Gerais iron quadrilateral mining corridor at 858 metres, with the CSN Presidente Vargas iron ore mining and the surrounding Vale and Gerdau operations generating elevated mineral PM10 and heavy metals alongside vehicle traffic on the BR-040. The elevated Espinhaço highland position aids background dispersal, while the iron ore mining industry's pervasive dust represents the most distinctive local air quality influence throughout the year.
Today - 9 August | Pollution peaks at 14:00
AQI:
Fair
31.3/100
PM2.5 (fine particles):
Fair
31.3/100
PM10 (coarse particles):
Good
15.1/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
18.9/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
4.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 14:00
AQI:
Medium
40.2/100
PM2.5 (fine particles):
Medium
40.2/100
PM10 (coarse particles):
Good
19.8/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
19.0/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
5.2/100
Pollen forecast in Congonhas
View pollen forecastFrequently Asked Questions
Is air quality bad in Congonhas right now?
On 9 August 2026, overall air quality in Congonhas is fair. AQI is the main air quality indicator at 31.3/100. Pollution peaks around 2:00 PM (PM2.5: 31.3/100).
Will air quality be worse tomorrow in Congonhas?
On 10 August 2026, air quality conditions in Congonhas will be better than today, with AQI forecast at medium at 40.2/100. Pollution peaks around 2:00 PM (PM2.5: 40.2/100).
When is air pollution at its worst in Congonhas?
Reduced air quality in Congonhas is most likely when native cerrado trees and mining reclamation vegetation pollen peaks, alongside periods of the CSN Presidente Vargas iron ore mining and the surrounding Vale and Gerdau operations; the rest of the year typically brings clearer, more consistent conditions.
Are air quality levels in Congonhas based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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