Worst air pollution Serra da Cantareira & Mairiporã - São Paulo, today and tomorrow
Today (9 August): Air quality in Serra da Cantareira & Mairiporã is fair. AQI and PM2.5 are fair; PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (PM2.5: 25.3/100).
Tomorrow (10 August 2026): Air quality in Serra da Cantareira & Mairiporã is fair. All pollutants stay as today. Pollution peaks around 8:00 AM (PM2.5: 35.0/100). 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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São Paulo's Serra da Cantareira and Mairiporã air quality benefits from the northern São Paulo state Atlantic Forest highland position at 900 to 1,100 metres, with consistent upland breezes providing excellent ventilation above the metropolitan boundary layer. The vast Cantareira State Park forest provides outstanding natural filtration, while the elevated position and the extensive Atlantic Forest cover generally maintain among the greater São Paulo region's most reliably clean conditions throughout most of the year.
Today - 9 August | Pollution peaks at 17:00
AQI:
Fair
25.3/100
PM2.5 (fine particles):
Fair
25.3/100
PM10 (coarse particles):
Good
12.0/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
20.0/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
3.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 08:00
AQI:
Fair
35.0/100
PM2.5 (fine particles):
Fair
35.0/100
PM10 (coarse particles):
Good
17.0/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
19.1/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
3.9/100
Other Landmarks in São Paulo
Frequently Asked Questions
Is air quality bad in Serra da Cantareira & Mairiporã right now?
On 9 August 2026, overall air quality in Serra da Cantareira & Mairiporã is fair. AQI is the main air quality indicator at 25.3/100. Pollution peaks around 5:00 PM (PM2.5: 25.3/100).
Will air quality be worse tomorrow in Serra da Cantareira & Mairiporã?
On 10 August 2026, air quality conditions in Serra da Cantareira & Mairiporã will be similar to today, with AQI forecast at fair at 35.0/100. Pollution peaks around 8:00 AM (PM2.5: 35.0/100).
When is air pollution at its worst in Serra da Cantareira & Mairiporã?
The most noticeable dips in Serra da Cantareira & Mairiporã's air quality come when native Atlantic Forest species and highland cerradão woodland pollen peaks, or because of the vast Cantareira State Park forest provides outstanding natural filtration, while the elevated position; for the rest of the year, natural airflow keeps background levels low.
Are air quality levels in Serra da Cantareira & Mairiporã 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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