Worst air pollution Guarulhos, today and tomorrow
Today (9 August): Air quality in Guarulhos is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (O3: 19.8/100).
Tomorrow (10 August 2026): Air quality in Guarulhos is good. All pollutants stay as today. Pollution peaks around 9:00 PM (O3: 19.1/100). 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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Guarulhos' air quality is significantly influenced by its position as São Paulo's airport city and a major industrial hub in the ABC industrial corridor, with aviation, vehicle, and manufacturing emissions combining in an area already subject to the Greater São Paulo metropolitan basin's poor dispersal characteristics. Readings here consistently track above the broader São Paulo average.
Today - 9 August | Pollution peaks at 00:00
AQI:
Good
19.8/100
PM2.5 (fine particles):
Good
10.3/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
19.8/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 21:00
AQI:
Good
19.1/100
PM2.5 (fine particles):
Good
12.5/100
PM10 (coarse particles):
Good
5.7/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
19.1/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
1.3/100
Pollen forecast in Guarulhos
View pollen forecastFrequently Asked Questions
Is air quality bad in Guarulhos right now?
On 9 August 2026, overall air quality in Guarulhos is good. AQI is the main air quality indicator at 19.8/100. Pollution peaks around 12:00 AM (O3: 19.8/100).
Will air quality be worse tomorrow in Guarulhos?
On 10 August 2026, air quality conditions in Guarulhos will be similar to today, with AQI forecast at good at 19.1/100. Pollution peaks around 9:00 PM (O3: 19.1/100).
When is air pollution at its worst in Guarulhos?
Reduced air quality in Guarulhos is most likely when eucalyptus and native Atlantic Forest species pollen peaks, alongside periods of aviation, vehicle, and manufacturing emissions; conditions usually ease once the wet season or windier weather returns.
Are air quality levels in Guarulhos 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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